An ejection snap-on mechanism with super-long core-pulling and an ejection snap-on method thereof

Abstract

The application discloses a kind of super-long core-pulling ejection buckling mechanism and its ejection buckling method, two track vertical plates are respectively arranged at the two side edges of bottom plate, rear mold B plate is arranged above the bottom plate, driving power component drives and connects rear mold B plate, push plate is arranged above the rear mold B plate, push plate is sleeved on rear mold guide column, and moving lifting sliding rail assembly is arranged between the two side surfaces of push plate and the inner side surfaces of two track vertical plates;When rear mold B plate translates along bottom plate, push plate is driven to move up and down synchronously and translate in track top translation section;Shovel and rotating shaft are arranged above track top translation section at the top of two track vertical plates, impact block is arranged on rotating shaft, push block and sliding block are arranged on push plate, push block is used to push impact block to overturn, sliding block is slidably connected with shovel, and the positioning of sliding block is separated from ejection demolding product when shovel is shovelled into sliding block.In the case of not increasing new injection molding machine equipment, high-cost machine platform, successfully mold core-pulling demolding is carried out on super-high size, with low cost and high efficiency.

Description

Technical Field

[0001] This invention relates to a core-pulling and demolding injection mold, and more particularly to an ejection and locking mechanism and method for an extra-long core-pulling injection mold used for products with a small projected area but a high height, such as medical boxes, water tanks, and filter core shells. Background Technology

[0002] In the application of core-pulling demolding molds, the process typically involves opening the front mold upwards from the rear mold (or opening the upper and lower molds separately), opening the mold opening height, and then pulling out the core to demold the product. However, since the mold opening distance and ejection height that each injection molding machine can open are limited, it is not possible to achieve an infinitely large mold opening distance and ejection height. As shown in Table 1, each injection molding machine has corresponding maximum parameter limitations on the mold opening distance and ejection height that can be opened. In particular, the ejection stroke and the maximum mold opening stroke parameters have significant limitations on the maximum height of the product that can be demolded during the core-pulling demolding process.

[0003] Machine number Manufacturer Name Machine model Tonnage (T) Power (KW) Screw model Adhesive position (mm) <![CDATA[Injection capacity (cm 3 )]]> Maximum injection mass (g) Maximum volumetric modulus (mm) Minimum volumetric modulus (mm) Green column width * height (mm) Ejection stroke (mm) Maximum mold opening stroke (mm) 5 Haitian MA1600 160 24.75 A-D40 201 253 230 520 180 470*470 140 430 23 Haitian MA2500 250 39.1 A-D50 240 471 429 580 220 580*580 150 540

[0004] According to the parameters in Table 1, for a 160T machine, the maximum mold capacity is 520mm and the maximum mold opening distance is 430mm. If a product with a height of 250mm needs to be molded and core-pulled for demolding, the ejection height after mold opening will become the biggest parameter obstacle. This is because it is necessary to meet twice the product height plus 50mm to effectively achieve a safe distance for mold opening and core pulling. Therefore, a machine of 250T or above is required to meet the effective safe distance for mold opening and core pulling. If a machine of 250T or above is not yet configured, it will require a high cost of equipment upgrades or directly lead to an embarrassing situation where production needs cannot be met. In addition, if the product needs to be fastened with a lid or cover before shipment, manual assembly is still required, increasing labor costs and making it difficult to effectively improve product efficiency.

[0005] Therefore, if the height of the product to be molded and demolded is greater than the ejection stroke and maximum mold opening stroke parameters of the injection molding machine itself, such as for some products with a small projected area but a high height, if the height of these products exceeds the ejection stroke and maximum mold opening stroke parameters of the injection molding machine itself, the core-pulling and demolding injection molding process cannot be effectively achieved. Therefore, if it is still necessary to perform core-pulling and demolding injection molding on products whose height exceeds the ejection stroke and maximum mold opening stroke parameters of the injection molding machine itself, the only options are to upgrade to an injection molding machine with a larger ejection stroke and maximum mold opening stroke parameter. However, the price of each injection molding machine is very high, often costing hundreds of thousands or even over a million yuan. This undoubtedly increases the investment cost of injection molding machines significantly. This is especially problematic when companies are undergoing product transformation. On the one hand, they are spending a lot of money to upgrade to injection molding machines that can meet the new height processing requirements, while the existing old injection molding machines are idle. This results in both a huge increase in equipment upgrade costs and the idleness of the old injection molding machines. In addition, the clamping force corresponding to the increased size of the injection molding machine will also increase accordingly, which will affect and reduce the mold life.

[0006] In addition, for products with a small projected area but a high height and with lids or caps, such as medical cases, water tanks, and filter cartridge shells, a one-time injection molding structure is usually adopted. For these products, it is easy to encounter the aforementioned problems of needing to upgrade and add injection molding machines, resulting in huge costs for upgrading and adding equipment, and the awkward situation of old injection molding machines being idle. Furthermore, the lids or caps cannot be easily demolded directly. They usually require manual operation of the equipment to flip and snap them together after injection molding, which increases labor costs and is not conducive to improving production efficiency.

[0007] Patent application ZL2017110646930, published on January 3, 2018, discloses a core-pulling and forced ejection mechanism, including a floating plate assembly and an ejector pin assembly. The floating plate assembly includes an elastic element and a push plate. The upper surface of the push plate has an injection cavity, and the elastic element is located below the lower surface of the push plate. The expansion and contraction of the elastic element causes the push plate to float. The ejector pin assembly includes an ejector sleeve and an ejector pin. The ejector sleeve is slidably fitted over the ejector pin, the ejector pin is fixed in position, and one end can extend into the injection cavity as an injection core. The push plate has a through hole communicating with the injection cavity, and the ejector sleeve is slidably located in the through hole and seals the injection cavity. A mold is also provided. The mold and its core-pulling and forced ejection mechanism have a simple structure, automatic core pulling upon mold opening, and the ability to eject the product from the injection cavity for demolding. It effectively prevents the molded product from adhering to the ejector pin. It is a mold and its core-pulling and forced ejection mechanism with high production efficiency, good demolding effect, and high yield of injection molded products. This solution also fails to address the aforementioned technical issues. Summary of the Invention

[0008] This invention addresses the limitations of existing injection molding dies for core-pulling and demolding, which are constrained by the mold opening distance and ejection height of the injection molding machine. When processing products exceeding these limitations, the addition of a new injection molding machine leads to high equipment upgrade costs and potential idleness of the existing machine. Furthermore, it addresses the high demolding costs and low efficiency of oversized products with caps or covers, including those exceeding these limits. The invention provides an ejection and locking mechanism and method for ultra-long core-pulling, which achieves smooth mold opening, core-pulling, and demolding of ultra-long products without incurring high costs associated with new injection molding machines.

[0009] The specific technical solution adopted by this invention to solve the above-mentioned technical problems is as follows: an ejection and fastening mechanism for an ultra-long core-pulling device, comprising a front mold and a rear mold, the front mold comprising a front mold A plate and a front mold panel, and the rear mold comprising a rear mold B plate and a rear mold guide post, characterized in that: it further comprises a translational ejection device and a flipping impact device, the translational ejection device comprising a base plate, track uprights, a push plate and a driving power component, two track uprights respectively disposed on both sides of the base plate, the rear mold B plate disposed above the base plate, the driving power component driving the rear mold B plate to translate along the base plate, a push plate disposed above the rear mold B plate, the push plate being sleeved on the rear mold guide post and movable up and down along the rear mold guide post. The push plate has movable lifting sliding track assemblies with a top-sliding section between its two sides and the inner sides of the two track uprights. When the rear mold B plate moves along the base plate, it drives the push plate to move up and down on the rear mold guide post and move within the top-sliding section of the track. The flipping and impacting device includes an impact block, a shovel, and a rotating shaft. The shovel and rotating shaft are located at the top of the two track uprights and above the top-sliding section of the track. The impact block is mounted on the rotating shaft, and the push plate has a push block and a slider. The push block is used to push the impact block to flip when the push plate moves. The slider is slidably connected to the shovel. When the shovel scoops into the slider, it causes the slider to separate from the positioning of the ejected product. This method can smoothly open and remove cores for ultra-high dimensions without increasing the cost of new injection molding machines. The cost of opening and removing cores is low, and the demolding efficiency is high. Without altering the parameters of existing injection molding machines, this technology effectively enables the production of ultra-long core-pulling height products exceeding safe production distances using existing small-sized injection molding machines with maximum mold opening distances. This is particularly beneficial for products with small projected areas but high heights, such as medical cases, water tanks, and filter housings, which also include lids or caps. It maximizes the efficient use of existing injection molding machines to achieve safe production of ultra-high core-pulling products, avoiding the huge costs of new injection molding machines and reducing overall equipment investment. It also enables automatic flipping and locking of product lids or caps, improving production efficiency and reducing costs.

[0010] Preferably, the movable lifting and sliding rail assembly includes a rear mold B plate translation sliding rail assembly and a push plate lifting and translation sliding rail assembly. The rear mold B plate translation sliding rail assembly adopts a sliding rail structure in which the two sides of the rear mold B plate and the inner sides of the two rail uprights are mutually concave and convex, limiting translation sliding grooves. The push plate lifting and translation sliding rail assembly has rolling or rotating components protruding from both sides of the push plate. The inner sides of the two rail uprights are provided with two sets of rail grooves. The two sets of rail grooves are used to guide the rolling or rotating components to slide or roll within their grooves. Both sets of rail grooves have an inclined section rail groove and a horizontal section rail groove. The horizontal section rail groove is the translation section at the top of the rail groove. The inner sides of the rear mold B plate and the two track upright plates are mutually concave and convex limiting translational sliding structures, which improves the simplicity, convenience and effectiveness of the moving lifting sliding track assembly in realizing the translational sliding guidance of the rear mold B plate after it is detached from the mold and the height size restriction of the upper front mold and A plate. It also improves the simplicity, convenience and reliability of the rear mold B plate moving out of the restricted area below the front mold and A plate. Furthermore, it improves the simplicity, convenience and reliability of the moving lifting sliding track assembly in realizing the push plate following the translational sliding of the rear mold B plate to detach from the restricted area below the front mold and A plate. Finally, it improves the simplicity, convenience and stability of the push plate automatically being pushed, flipped and locked by the flipping and pressing device after detaching from the mold height restriction area.

[0011] Preferably, the driving power component is a telescopic electric cylinder, a telescopic pneumatic cylinder, or a telescopic hydraulic cylinder, which is connected to the rear mold B plate via its corresponding telescopic push rod. This improves the simplicity, stability, reliability, and effectiveness of the driving power component in driving the translation of the rear mold B plate.

[0012] Preferably, the push plate is provided with two first sliders, two second sliders, two pressure blocks, and one push block. Each of the two first sliders is provided with a first limiting and fixing block, used to limit and fix the cover of the product to be ejected from the mold. Each of the two second sliders is provided with a second limiting and fixing block, used to limit and fix the end of the cover of the main body of the product to be ejected from the mold. A pressure block is pressed onto the top of the first and second sliders on the same side. The push block is positioned directly opposite the impact block in the flipping and pressing device. The outer ends of both the first and second sliders are provided with inclined grooves that cooperate with the shovel for scooping. The outer ends of the inclined grooves are angled towards the inner side of the track plate and the direction of the shovel. This design improves the ease, convenience, stability, reliability, and effectiveness of pushing and flipping the cover or cover of the product during the translational movement of the push plate. It also improves the ease, convenience, flexibility, reliability, and effectiveness of the gradual opening and demolding of the cover or cover and the end of the cover of the main body by the two first sliders and two second sliders during the translational movement of the push plate.

[0013] Preferably, the rotating shaft is located at the top of the two track plates and above the horizontal section of the track top. Rotating shaft pins are provided at both ends of the rotating shaft where they connect to the top of the two track plates. The rotating shaft pins are perpendicularly connected to the rotating shaft, and the top of the track plates connected to the rotating shaft pins have pin movement limiting grooves. This improves the ease, reliability, stability, convenience, and effectiveness of the rotating shaft and its impact block in flipping, impacting, and demolding the product cover or lid during the horizontal movement of the push plate.

[0014] Preferably, the rotating shaft is equipped with a spring or torsion spring on both sides of the impact block. This improves the ease, convenience, and effectiveness of automatic return after the product and its lid or cover have been molded and demolded.

[0015] Preferably, the impact block comprises an impact block body, an inclined surface, a turning impact block portion, and a wing plate impact block body. The impact block body is fixedly connected to the rotating shaft and is rectangular in shape. The inclined surface extends from the front end of the impact block body towards the pushing block, and is used to contact the pushing block to push the impact block body to flip backward. The turning impact block portion and the wing plate impact block body extend from the rear end of the impact block body. When the impact block is in a stationary, unflipped state, the impact surface of the turning impact block portion is higher than the top of the impact block body. The wing plate impact block body extends backward from the turning impact block portion, and there is a 90-degree flipping connection between the wing plate impact block body and the impact block body. This design improves the ease, convenience, reliability, stability, and effectiveness of using different parts of the impact block to impact, flip, and fasten product covers or caps, and also improves the ease, convenience, and effectiveness of limiting, fixing, opening, and demolding of products and product caps.

[0016] Preferably, the pushing block has a downward-sloping triangular end structure composed of a lower inclined surface and an upper flat surface at the end facing the impact block. The lower inclined surface is inclined downwards from the pushing head of the pushing block away from the impact block. This improves the simplicity, reliability, stability, and effectiveness of the pushing block's pushing action on the impact block. The lower inclined surface provides effective space for the impact block's inclined surface to flip, thus better ensuring the execution of the impact block's flipping and impacting action.

[0017] Preferably, the pressing block adopts an inverted mountain-shaped structure, and the two pressing spaces formed by the inverted mountain-shaped structure respectively press and limit the first slider and the second slider. This improves the simplicity, reliability, stability and effectiveness of pressing and limiting the first slider and the second slider.

[0018] Another objective of this invention application is to provide an ejection and fastening method for an ultra-long core-pulling device, characterized by employing an ejection and fastening mechanism for an ultra-long core-pulling device as described in one of the above-mentioned technical solutions, and using the following ejection and fastening steps:

[0019] A1. After injection molding is completed, the mold is opened, and the front mold and the rear mold are opened to the maximum distance.

[0020] A2. The driving power unit performs the translation task of driving plate B and the push plate above plate B, moving plate B horizontally toward the driving power unit.

[0021] A3. In step A2 above, while plate B moves horizontally toward the direction of the driving power component under the connection of the driving power component, the push plate on plate B moves automatically along the rear mold guide post to the top of the track under the guidance of the push plate lifting and translating sliding slide rail assembly, so as to move both plate A and the push plate to a position outside the area of ​​plate A of the front mold, and the space above the push plate is not restricted by plate A.

[0022] A4. Under the driving action of the drive power component, as the push plate moves horizontally toward the overturning impact device at the top of the track, the pushing block on the push plate touches the impact block, and at the same time, the two first sliders in the slider also touch the shovel.

[0023] A5. As the driving power component continues to drive, the inclined grooves in the two first sliders continue to advance towards the excavator. As the excavator makes a deeper cut into the inclined grooves in the two first sliders, it will force the two first sliders to retreat towards the two track plates respectively, thereby forcing the two first sliders to retreat and open up to break away from the limitation and fixation of the product cover or cover body, and making the bottom space of the product cover or cover body vacate.

[0024] A6. In step A5 above, the pushing block will also continue to push the inclined body in the impact block, causing the main body of the impact block to slowly rotate.

[0025] A7. In step A5 above, after the space at the bottom of the product cover or cover body is emptied, only two second sliders limit and fix the end of the cover of the product body.

[0026] A8. In steps A5 to A7 above, as the two first sliders separate from the shovel and the driving power component continues to drive, the push plate continues to move toward the flipping and impacting device, pushing the block against the inclined body in the impact block and rotating until the turning impact block part in the impact block touches the top of the product cover.

[0027] A9. In step A8 above, as the driving power component continues to drive, the push plate continues to move toward the flipping and pressing device. Since the product cover and the connecting end of the product body adopt a relatively soft butterfly bend joint structure, the turning block part presses the product cover downward, causing the product cover to slowly rotate downward and flip toward the connecting end of the product body.

[0028] A10. In step A9 above, as the driving power component continues to drive, the push plate continues to move toward the flipping and impacting device, the product cover continues to rotate and flip toward the end of the product body, and the product body also moves toward the wing plate impact block body of the impact block until the wing plate impact block body supports and covers the entire product cover on the end of the product body.

[0029] A11. In step A10 above, as the driving power component continues to drive, the push plate continues to move toward the overturning and impacting device, and the two second sliders touch the shovel. As the shovel makes a deep scooping contact with the inclined grooves in the two second sliders, it will force the two second sliders to retreat toward the two track uprights respectively, thereby forcing the two second sliders to retreat and open to break away from the limitation and fixation of the product cover or cover body, so that the end of the cover of the product body is completely separated from the mold.

[0030] A12. Remove the product; the core-pulling, mold-opening, and demolding processes are complete.

[0031] A13. During the mold closing process, the two first sliders and the two second sliders will return to their original positions in sequence due to the driving power components and the shovel; the impact block will also automatically return to its original position under the restoring force of the spring or torsion spring, forming a reciprocating closed loop.

[0032] Without altering the parameters of existing injection molding machines, this technology effectively meets the mold-opening and demolding needs of products with ultra-long core-pulling heights exceeding safe production distances. This is particularly beneficial for products with small projected areas but high heights, such as medical cases, water tanks, and filter housings, which also include lids or caps. It maximizes the efficient use of existing injection molding machines to achieve safe production of ultra-high core-pulling devices; no new injection molding machines are required, and the technology enables automatic flipping and locking of product lids or caps, improving production efficiency and reducing costs.

[0033] The beneficial effects of this invention are: without changing the parameters of existing injection molding machines, it effectively realizes the production needs of ultra-long core-pulling height products exceeding the safe production distance using existing small-sized injection molding machines with the maximum mold opening distance. This is especially true for products with a small projected area but a high height, such as medical boxes, water tanks, and filter cartridge shells, which also have lids or caps. It maximizes the efficient use of existing injection molding machines to achieve safe production of ultra-high core-pulling products, avoids the huge cost of investing in new injection molding machines, reduces the investment cost of injection molding machines, and can automatically flip and snap the product lids or caps, improving production efficiency and reducing production costs. Attached Figure Description

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] Figure 1 This is a schematic diagram of the ejection and fastening mechanism and ejection and fastening method of the ultra-long core pulling of the present invention.

[0036] Figure 2 yes Figure 1 A schematic diagram of the structure after removing the front mold and one of its track uprights and other components.

[0037] Figure 3 The schematic diagram of the ejection and locking mechanism and its ejection and locking method of the ultra-long core pulling of the present invention is shown in part of the structure after the front mold and the rear mold are opened.

[0038] Figure 4 The schematic diagram of the ejection and locking mechanism and ejection and locking method of the ultra-long core pulling of the present invention, viewed from another direction after the front mold and the rear mold are opened.

[0039] Figure 5 yes Figure 4 A schematic diagram of the structure after removing the front mold and one of its track uprights and other components.

[0040] Figure 6 yes Figure 5 A schematic diagram of the structure viewed from another direction.

[0041] Figure 7 The schematic diagram of the ejection and locking mechanism and ejection and locking method of the ultra-long core-pulling device of the present invention is shown in the state of removing relevant components while retaining the push plate and relevant components on the push plate and the flipping and pressing device.

[0042] Figure 8 A schematic diagram of a product structure used in the ejection and fastening mechanism and ejection and fastening method of the ultra-long core pulling of the present invention.

[0043] Figure 9 The schematic diagram of the ejection and locking mechanism and ejection and locking method of the ultra-long core pulling of the present invention, when the shovel touches and shovels into the first slider, and the first slider gradually disengages from the product cover and the impact block flips over.

[0044] Figure 10 The present invention relates to an ejection and locking mechanism and method for ultra-long core pulling. Figure 9 A schematic diagram of the structure when the push plate continues to move 10mm to the right after reaching the desired state.

[0045] Figure 11 The present invention relates to an ejection and locking mechanism and method for ultra-long core pulling. Figure 10 A schematic diagram of the structure when the push plate continues to move 5mm to the right after reaching the desired state.

[0046] Figure 12 The present invention relates to an ejection and locking mechanism and method for ultra-long core pulling. Figure 11 A schematic diagram of the structure when the push plate continues to move 20mm to the right after reaching the desired state.

[0047] Figure 13 The present invention relates to an ejection and locking mechanism and method for ultra-long core pulling. Figure 12 A schematic diagram of the structure when the push plate continues to move 10mm to the right after the initial state, and the shovel shovels into the second slider. Detailed Implementation

[0048] Example 1:

[0049] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 In the illustrated embodiment, an ejection and locking mechanism for an ultra-long core-pulling device includes a front mold 01 (front mold core) and a rear mold 02 (rear mold core). The front mold 01 includes a front mold A plate 04 and a front mold panel 05. The rear mold 02 includes a rear mold B plate 03 and rear mold guide pillars 031. It also includes a translational ejection device and a flipping impact device. The translational ejection device includes a base plate 06, track uprights 10, a push plate 20, and a driving power component. Two track uprights 10 are respectively and fixedly connected to the two sides of the base plate 06. The rear mold B plate 03 is installed above the base plate 06. The driving power component drives the rear mold B plate 03 to move translationally along the base plate 06. A push plate 20 is installed above the rear mold B plate 03. The push plate 20 is fitted onto four rear mold guide pillars 031 and can move up and down along the rear mold guide pillars 031. The two sides of the 20 and the inner sides of the two track uprights 10 are each provided with a movable lifting sliding track assembly with a top sliding section of the track; when the rear mold B plate 03 moves along the bottom plate 06, it drives the push plate 20 to move up and down on the four rear mold guide pillars 031 and move within the top sliding section of the track; the flipping and impacting device includes a ram, a shovel 30 and a rotating shaft 44. The shovel 30 and the rotating shaft 44 are installed and connected at the top 13 of the two track uprights and located above the top sliding section of the track. The ram is installed and fixed on the rotating shaft 44. The push plate 20 is equipped with a push block 23 and a slider. The push block 23 is used to push the ram to flip when the push plate 20 moves. The slider is slidably connected with the shovel 30. When the shovel 30 scoops into the slider, it drives the slider to separate from the positioning of the ejected demolded product.

[0050] The movable lifting and sliding rail assembly includes a rear mold B plate translation sliding rail assembly and a push plate lifting and translation sliding rail assembly. The rear mold B plate translation sliding rail assembly employs a sliding rail structure where the two sides of the rear mold B plate 03 and the inner sides of the two rail uprights 10 are mutually concave and convex, limiting translation sliding grooves. For example, when protruding slide rails 14 are provided on the inner sides of the two rail uprights 10, limiting translation sliding grooves 24 that slide in conjunction with the protruding slide rails 14 are used on both sides of the rear mold B plate 03. The driving power component connects to drive the rear mold B plate. When 03 moves horizontally, it effectively ensures the stability and reliability of the horizontal movement guidance of the rear mold B plate 03; the push plate lifting and translation sliding slide rail assembly adopts the push plate with rolling or rotating parts protruding on both sides, and two sets of track slide grooves are provided on the inner side of the two track upright plates. The two sets of track slide grooves are used to guide the rolling or rotating parts to slide or roll within their slide grooves. Both sets of track slide grooves have an inclined section track slide groove 12 and a horizontal section track slide groove 11. The horizontal section track slide groove 11 is the translation section at the top of the track slide groove. Two sets of track grooves are fitted with two bearings 21 or ball bearings on each side of the push plate 20. This maximizes the stability of the push plate 20 during its lifting and horizontal movements along the two sets of track grooves, while also reducing the impact on the push plate 20 and the two sets of track grooves, thus simplifying and improving the effectiveness of the movement guidance control structure. The rolling or rotating components use bearings 21 or ball bearings. The bearings 21 or ball bearings on both sides of the push plate 20 can be limited to rotate or roll within the inclined section track groove 12 and the horizontal section track groove 11, thereby guiding the push plate 20 to move and change position along the inclined section track groove 12 and the horizontal section track groove 11. This, in turn, causes all components mounted on the push plate 20 to move and change position synchronously. The driving power component 07 uses a telescopic electric cylinder, telescopic pneumatic cylinder, or telescopic hydraulic cylinder. The telescopic electric cylinder, telescopic pneumatic cylinder, or telescopic hydraulic cylinder is connected to the rear mold B plate 03 via its corresponding telescopic push rod 071.

[0051] The push plate 20 is equipped with two first sliders 50, two second sliders 60, two pressure blocks 22, and one push block 23. Each of the two first sliders 50 is connected to a first limiting and fixing block 51, which is used to limit and fix the cover 71 of the product to be ejected and demolded. Each of the two second sliders 60 is equipped with a second limiting and fixing block, which is used to limit and fix the end 72 of the cover of the main body 70 of the product to be ejected and demolded. (Note: The product and its cover or cover shape shown in the figure are only a product effect display and do not represent that only the product effect shown in the figure can be processed. For products with a small projected area but high height...) Products with a high degree of curvature, or products that also have a cover or lid, can all use the technical solution of this application for long core-pulling mold opening and demolding processing. Pressure blocks are installed above both the two first sliders 50 and the two second sliders 60, that is, one pressure block is pressed onto the top of the first slider and the second slider on the same side. Specifically, the two pressure blocks 22 are distributed on both sides of the product body 70 and the lid 71, effectively pressing and limiting the two first sliders 50 and the two second sliders 60 on both sides of the product body 70 and the lid 71, better ensuring the stability and reliability of their sliding action, and facilitating mechanism maintenance; when the push block is directly opposite... The impact block is set in the overturning impact device; both ends of the two first sliders 50 and the two second sliders 60 are provided with inclined grooves that cooperate with the shovel to engage with the shovel. The outer ends of the inclined grooves are inclined towards the inner side of the track plate and the direction of the shovel; specifically, the two first sliders 50 are provided with first inclined grooves 52 that cooperate with the shovel 30 to engage with the shovel. The outer top surface 53 of the first sliders facing the inner side of the two track plates 10 has a lower height than the height of the top surface of the first sliders away from the inner side of the two track plates 10 of the first inclined grooves 52; the two second sliders 60 The upper part is provided with a second inclined slide groove 61 that cooperates with the shovel 30 to scoop. The outer top surface of the second slider facing the inner side of the two track uprights 10 of the two second inclined slide grooves 52 has a lower height dimension than the height of the second slider top surface of the second inclined slide groove 61 away from the inner side of the two track uprights 10. At the front end of the second slider outer top surface facing the shovel 30, there is a front entry trapezoidal platform surface 62. The top surface height of the front entry trapezoidal platform surface 62 is flush with the bottom height of the second inclined slide groove 61, which improves the smoothness, reliability and effectiveness of the shoveling guidance when the shovel 30 scoops into the second inclined slide groove 61.

[0052] The rotating shaft 44 is installed at the top of the two track plates 10 and above the horizontal section of the track (i.e., the horizontal section of the track slide 11). The two ends of the rotating shaft 44 are connected to the top of the two track plates 10 with rotating shaft pins 45. The rotating shaft pins 45 are perpendicularly connected to the rotating shaft 44 (the central axis of the rotating shaft pin is perpendicular to the central axis of the rotating shaft). The top of the track plate connected to the rotating shaft pins 45 is provided with a pin movement limiting groove 15, which better realizes the limiting effectiveness of the rotating shaft rotation driven by the pushing block 23 against the collision block.

[0053] A spring or torsion spring 46 is installed on both sides of the impact block on the rotating shaft 44. When the impact block is continuously pushed by the push block 23 and flips to press the cover or lid 71 of the product, the rotating shaft 44 also rotates. The spring or torsion spring 46 installed on the rotating shaft 44 is also continuously tightened by force. During the recovery process, the spring or torsion spring 46 releases its elastic force to make the impact block slowly return to its original position, thus improving the simplicity, reliability and effectiveness of the impact block slowly returning to its original position.

[0054] The impact block has an impact block body 40, a ramp body 41, a turning impact block part 42, and a wing plate impact block body 43. The impact block body 40 is fixedly connected to the middle position of the rotating shaft 44. The impact block body 40 is rectangular in shape. The wing plate impact block body 43 is rectangular in shape. The front end of the impact block body 43, which faces the push block 23, extends and is connected to the impact surface of the impact block ramp body 41. The impact surface of the impact block ramp body 41 is used to contact the push block 23 to push the impact block body 40 to flip backward. The rear end of the impact block body 40 extends and is connected to the turning impact block part 42 and the wing plate impact block body 43. When the impact block is in a stationary state without flipping, the impact surface of the turning impact block part 42 is higher than the top height of the impact block body 40. The wing plate impact block body 43 extends and is connected to the turning impact block part 42 backward. There is a 90-degree flipping connection section 47 between the wing plate impact block body 43 and the impact block body 40.

[0055] The pusher block 23 has a downward-sloping triangular end structure composed of a lower slope body 231 and an upper plane body at the end facing the impact block. The lower slope body 231 is inclined downward from the pusher head of the pusher block away from the impact block.

[0056] The pressure block 22 adopts an inverted mountain-shaped structure. The two pressing spaces formed by the inverted mountain-shaped structure respectively press and limit the first slider 50 and the second slider 60.

[0057] Example 2:

[0058] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6, Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 In the illustrated embodiment, an ejection and fastening method for an ultra-long core-pulling device employs the ejection and fastening mechanism for an ultra-long core-pulling device described in Embodiment 1, and uses the following ejection and fastening steps:

[0059] A1. After injection molding is completed, the mold is opened, and the front mold and rear mold are opened to the maximum distance (see...). Figure 3 , Figure 4 );

[0060] A2. The driving power unit performs the translation task of driving plate B and the push plate above plate B, moving plate B horizontally toward the driving power unit.

[0061] A3. In step A2 above, while plate B moves horizontally towards the driving power component under the connection of the driving power component, the push plate on plate B simultaneously rises automatically along the rear mold guide post under the guidance of the push plate lifting and translating sliding slide rail assembly, moving to the top translation section of the track. This achieves the goal of moving both plate A and the push plate to a position outside the area of ​​plate A in the front mold, with the space above the push plate no longer restricted by plate A (see...). Figure 3 (and subsequent views);

[0062] A4. Under the driving action of the drive power component, as the push plate moves horizontally towards the overturning and impacting device at the top of the track, the pushing block on the push plate contacts the impact block, and at the same time, the two first sliders in the slider also contact the shovel (see...). Figure 4 );

[0063] A5. As the driving force continues to operate, the inclined grooves in the two first sliders continue to advance towards the excavator. As the excavator penetrates deeper into the inclined grooves of the two first sliders, it forces the two first sliders to retreat towards the two track plates, thereby forcing the two first sliders to retreat and open up, thus releasing them from the limiting and fixing of the product cover or lid, and freeing up the space at the bottom of the product cover or lid (see...). Figure 9 );

[0064] A6. In step A5 above, the pushing block will also continue to push the inclined body in the impact block, causing the main body of the impact block to slowly rotate.

[0065] A7. In step A5 above, after the space at the bottom of the product cover or cover body is emptied, only two second sliders limit and fix the end of the cover of the product body.

[0066] A8. In steps A5 to A7 above, as the two first sliders separate from the shovel and the driving power component continues to drive, the push plate continues to move towards the overturning and impacting device, pushing the block against the inclined body in the impact block until the turning impact block part in the impact block touches the top of the product cover (see...). Figure 10 );

[0067] A9. In step A8 above, as the driving power component continues to drive, the push plate continues to move towards the flipping and pressing device. Because the product cover and the product body's connecting end use a relatively soft butterfly-shaped bend structure, the turning impact block presses downwards against the product cover, causing the product cover to slowly rotate downwards and flip towards the connecting end of the product body (see...). Figure 11 );

[0068] A10. In step A9 above, as the driving power component continues to drive, the push plate continues to move towards the flipping and impacting device, the product cover continues to rotate and flip towards the end of the product body, and the product body also moves towards the wing plate impact block until the wing plate impact block completely supports and closes the entire product cover onto the end of the product body (see...). Figure 12 );

[0069] A11. In step A10 above, as the driving power component continues to drive, the push plate continues to move towards the overturning and impacting device. The two second sliders touch the shovel. As the shovel penetrates the inclined grooves in the two second sliders, it forces the two second sliders to retreat towards the two track plates, thereby forcing the two second sliders to retreat and open, thus releasing them from the limiting and fixing of the product cover or lid, allowing the end of the product body connected to the cover to completely detach from the mold (see...). Figure 13 );

[0070] A12. Remove the product; the core-pulling, mold-opening, and demolding processes are complete.

[0071] A13. During the mold closing process, the two first sliders and the two second sliders will return to their original positions in sequence due to the driving power components and the shovel; the impact block will also automatically return to its original position under the restoring force of the spring or torsion spring, forming a reciprocating closed loop.

[0072] The above Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 In the embodiment shown, to better illustrate the demolding process and the interaction between the blocks, the entire product body at a height of 70 is not drawn; otherwise, it is the same as in embodiment 1.

[0073] Example 3:

[0074] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 In the illustrated embodiment, an ejection and fastening method for an ultra-long core-pulling device employs the ejection and fastening mechanism for an ultra-long core-pulling device described in Embodiment 1, and uses the following ejection and fastening steps:

[0075] A1. After injection molding is completed, the mold opening is 430mm, and the front mold and rear mold are opened to the maximum distance;

[0076] A2. The driving power unit performs the translation task of driving plate B and the push plate above plate B, moving plate B horizontally toward the driving power unit.

[0077] A3. In step A2 above, while plate B moves horizontally toward the direction of the driving power component under the connection of the driving power component, the push plate on plate B moves automatically along the rear mold guide post to the top of the track under the guidance of the push plate lifting and translating sliding slide rail assembly, so as to move both plate A and the push plate to a position outside the area of ​​plate A of the front mold, and the space above the push plate is not restricted by plate A.

[0078] A4. Under the driving action of the drive power component, as the push plate moves horizontally toward the overturning impact device at the top of the track, the pushing block on the push plate touches the impact block, and at the same time, the two first sliders in the slider also touch the shovel.

[0079] A5. As the driving force continues to operate, the inclined grooves in the two first sliders continue to advance towards the excavator. As the excavator penetrates deeper into the inclined grooves of the two first sliders, it forces the two first sliders to retreat 12mm towards the two track plates respectively. This forces the two first sliders to retreat and open, releasing them from the limiting and fixing of the product cover or lid. After plate B moves 326mm from the starting position towards the driving force, the space at the bottom of the product cover or lid is emptied (see...). Figure 9 );

[0080] A6. In step A5 above, the pushing block will also continue to push the inclined body in the impact block, causing the main body of the impact block to slowly rotate.

[0081] A7. In step A5 above, after the space at the bottom of the product cover or cover body is emptied, only two second sliders limit and fix the end of the cover of the product body.

[0082] A8. In steps A5 to A7 above, as the two first sliders separate from the shovel and the driving power component continues to drive, the push plate continues to move 10mm toward the overturning impact device, pushing the block against the inclined body in the impact block and rotating it 167 degrees until the turning impact block part in the impact block touches the top of the product cover (see...). Figure 10 );

[0083] A9. In step A8 above, as the driving power component continues to drive, the push plate continues to move 5mm toward the flipping and pressing device. Because the product cover and the end of the product body are connected by a relatively soft butterfly-shaped bend, the turning and impacting block presses the product cover downwards, causing the product cover to slowly rotate downwards and flip toward the end of the product body (see...). Figure 11 );

[0084] A10. In step A9 above, as the driving power component continues to drive, the push plate continues to move 20mm toward the flipping and impacting device, the product cover continues to rotate and flip toward the end of the product body, and the product body also moves toward the wing plate impact block until the wing plate impact block completely supports and closes the entire product cover onto the end of the product body (see...). Figure 12 );

[0085] A11. In step A10 above, as the driving power component continues to drive, the push plate continues to move 10mm toward the overturning and pressing device. The two second sliders touch the shovel. As the shovel penetrates the inclined grooves in the two second sliders, it forces the two second sliders to retreat toward the two track plates, thereby forcing the two second sliders to retreat and open, thus releasing them from the limiting and fixing of the product cover or lid, and completely removing the end of the product body connected to the cover from the mold (see...). Figure 13 );

[0086] A12. Remove the product; the core-pulling, mold-opening, and demolding processes are complete.

[0087] A13. During the mold closing process, the two first sliders and the two second sliders will return to their original positions in sequence due to the driving power components and the shovel; the impact block will also automatically return to its original position under the restoring force of the spring or torsion spring, forming a reciprocating closed loop.

[0088] The above Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 In the embodiment shown, to better illustrate the demolding process and the interaction between the blocks, the entire product body at a height of 70 is not drawn; otherwise, it is the same as in embodiment 1.

[0089] Note: The dimensional distance parameters recorded in steps A1 to A13 above are all based on the injection molding machine with a maximum mold opening distance of 430mm. For other injection molding machines with maximum mold opening distances or product heights exceeding this corresponding machine size, adjust the appropriate moving distance control dimensional parameters according to the above embodiment's technical solution to complete the core pulling, mold opening, and demolding actions.

[0090] In the description of positional relationships in this invention, terms such as “inner,” “outer,” “upper,” “lower,” “left,” “right,” “front,” and “rear” are used to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0091] The above content and structure describe the basic principles, main features, and advantages of the product of this invention, which should be understood by those skilled in the art. The examples and descriptions above are merely illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An ejection snap-on mechanism of super long core-pulling, comprising a front mold and a back mold, the front mold comprising a front mold A plate and a front mold face plate, the back mold comprising a back mold B plate and a back mold guide pillar, characterized in that: The translation device also comprises a translation ejection device and a turnover impact device. The translation ejection device comprises a bottom plate, two track vertical plates, a push plate and a driving power component. The two track vertical plates are respectively arranged at the two side edges of the bottom plate. The back mold B plate is arranged above the bottom plate. The driving power component is drivingly connected with the back mold B plate to move along the bottom plate. The push plate is arranged above the back mold B plate and is sleeved on the back mold guide column and can move up and down along the back mold guide column. The two side surfaces of the push plate and the inner side surfaces of the two track vertical plates are both provided with a moving lifting sliding track assembly with a track top end translation section. When the back mold B plate moves along the bottom plate, the push plate moves up and down along the back mold guide column and moves along the track top end translation section.

2. The over-core ejector snap mechanism of claim 1, wherein: The turnover impact device comprises a block, a shovel and a rotating shaft. The shovel and the rotating shaft are arranged at the top ends of the two track vertical plates and above the track top end translation section. The block is arranged on the rotating shaft. The push plate is provided with a pushing block and a sliding block. The pushing block is used to push the block to turn over when the push plate moves. The sliding block is slidingly connected with the shovel. When the shovel is inserted into the sliding block, the sliding block drives the sliding block to separate from the ejection demolding product. When the push plate moves towards the turnover impact device, the entire product cover is supported and closed on the product main body connected with the cover.

3. The over-core ejector snap mechanism of claim 2, wherein: The moving lifting sliding track assembly comprises a back mold B plate translation sliding track assembly and a push plate lifting translation sliding track assembly. The back mold B plate translation sliding track assembly adopts a concave-convex limiting translation sliding groove rail structure between the two side surfaces of the back mold B plate and the inner side surfaces of the two track vertical plates. The push plate lifting translation sliding track assembly adopts a rolling component provided on the two side surfaces of the push plate. The inner side surfaces of the two track vertical plates are both provided with two groups of track sliding grooves. The two groups of track sliding grooves are used to guide the rolling component to limit sliding or rolling in the sliding grooves. The two groups of track sliding grooves both have an inclined section track sliding groove and a horizontal section track sliding groove. The horizontal section track sliding groove is the track top end translation section of the track sliding groove.

4. The over-core ejector snap mechanism of claim 3, wherein: The driving power component adopts a telescopic electric cylinder, a telescopic air cylinder or a telescopic hydraulic cylinder. The telescopic electric cylinder, the telescopic air cylinder or the telescopic hydraulic cylinder is drivingly connected with the back mold B plate through a corresponding telescopic push rod.

5. The over-core ejector snap mechanism of claim 4, wherein: The push plate is provided with two first sliding blocks, two second sliding blocks, two pressing blocks and one pushing block. The first limiting fixed blocks are arranged on the two first sliding blocks. The first limiting fixed blocks are used to limit and fix the cover of the ejection demolding product. The second limiting fixed blocks are arranged on the two second sliding blocks. The second limiting fixed blocks are used to limit and fix the cover connecting end of the ejection demolding product main body. The same side first sliding block and the second sliding block are provided with one pressing block above. The pushing block is arranged opposite to the block in the turnover impact device. The outer end of the two first sliding blocks and the two second sliding blocks is provided with an inclined sliding groove matched with the shovel. The outer end of the inclined sliding groove is arranged towards the inner side surface of the track vertical plate and the shovel.

6. The over-core ejecting snap-on mechanism according to claim 5, characterized in that: The rotating shaft is connected at the top ends of the two track vertical plates and above the track top end translation section. The rotating shaft pins are arranged at the top end connection positions of the two track vertical plates and the two ends of the rotating shaft. The rotating shaft pins are vertically connected with the rotating shaft. The top end connection positions of the track vertical plates connected with the rotating shaft pins are provided with pin movement limiting grooves. The rotating shaft is provided with spring sheets or torsional springs at the two sides of the block.

7. The over-core ejecting snap-on mechanism according to claim 6, characterized in that: The said block has a block body, an inclined surface, a turning block part and a wing plate block body, the block body is connected and fixed on the rotating shaft, the block body is in the shape of a rectangle, the wing plate block body is in the shape of a rectangle, the front end of the block body extending towards the pushing block is connected with the inclined surface, the inclined surface is used to contact the pushing block to push the block body to turn back, the rear end of the block body is connected with the turning block part and the wing plate block body, the turning block part is higher than the top end of the block body when the block is in the state of non-turning, the wing plate block body extends from the turning block part, and the wing plate block body and the block body have a 90-degree turning connection section.

8. The over-core ejector snap mechanism of claim 7, wherein: The said pushing block has a downward inclined triangular end structure composed of a lower inclined surface and an upper plane at the end of the block, wherein the lower inclined surface is inclined downward and away from the block.

9. The over-core ejecting snap-on mechanism according to claim 8, characterized in that: The said pressing block adopts an inverted mountain shape structure, and the two pressing spaces formed by the inverted mountain shape structure limit the positions of the first sliding block and the second sliding block.

10. A method of ejection snap-on of an overlong core, characterized in that, The super-long core-pulling ejection buckle mechanism of claim 9 is adopted, and the following ejection buckle steps are adopted: A1. After injection molding, the mold is opened, and the front mold and the rear mold are opened to the maximum distance; A2. The driving power component drives the translation of the B plate and the upper plate above the B plate, and moves the B plate horizontally towards the driving power component; A3. In the step A2, the B plate moves horizontally towards the driving power component under the connection and driving of the driving power component, and the upper plate above the B plate automatically moves upwards along the rear mold guide column to the top end of the track translation section under the guidance of the pushing plate lifting translation sliding rail assembly, so that the A plate and the pushing plate are moved to a position outside the A plate area of the front mold, and the space above the pushing plate is not limited by the A plate; A4. Under the driving action of the driving power component, the pushing block on the pushing plate touches the block while the two first sliding blocks in the sliding block also touch the shovel; A5. Under the continuous driving action of the driving power component, the inclined sliding grooves in the two first sliding blocks continue to advance towards the shovel, and as the shovel depth of the inclined sliding grooves in the two first sliding blocks is excavated, the two first sliding blocks are forced to retreat towards the two track vertical plates, so that the two first sliding blocks are forced to retreat to open and separate from the limiting and fixing of the product cover, and the space below the product cover is emptied; A6. In the step A5, the pushing block also continuously pushes the inclined surface in the block, so that the block body rotates slowly; A7. In the step A5, after the space below the product cover is emptied, only the two second sliding blocks limit and fix the cover end of the product body; A8. In the steps A5-A7, under the continuous driving action of the driving power component, the pushing plate continues to move towards the turning and pressing device, and the pushing block rotates against the inclined surface in the block to touch the product cover top. A9. In the above A8 step, the push plate continues to move towards the overturning and pressing device under the continued driving action of the driving power component. Since the soft butterfly bending mouth connecting structure is adopted between the product cover and the connecting end of the product main body, the downward pressing of the turning block part to the product cover makes the product cover slowly rotate downward and overturn towards the connecting end of the product main body; A10. In the above A9 step, the push plate continues to move towards the overturning and pressing device under the continued driving action of the driving power component. The product cover continues to rotate and overturn towards the connecting end of the product main body, and the product main body also moves towards the wing block body of the block at the same time to support the entire product cover on the connecting end of the product main body; A11. In the above A10 step, the push plate continues to move towards the overturning and pressing device under the continued driving action of the driving power component. The two second sliding blocks touch the shovel, and the depth of the inclined sliding groove in the two second sliding blocks is shovelled, which forces the two second sliding blocks to retreat towards the two track vertical plates, thereby forcing the two second sliding blocks to retreat and open to release the limiting and fixing of the product cover, so that the connecting end of the product main body completely separates from the mold; A12. The product is taken out, and the core pulling and mold opening and demolding action is completed; A13. The mold closing process, the two first sliding blocks and the two second sliding blocks will be returned in turn due to the relationship between the driving power component and the shovel. The block will also automatically return to the original position under the restoring force of the spring or the torsional spring, forming a reciprocating closed loop.

Images