Double-sided flexible equipment for dynamically adjusting mold cavity and injection molding equipment

Abstract

The invention relates to the technical field of injection molding, and discloses a mold cavity dynamic adjustment double-sided flexible device and an injection molding device.The double-sided flexible device comprises an upper base and a lower base which are the same in structure and are symmetrically arranged; the motors are uniformly arranged on the upper base or the lower base, and the lead screw linear motion mechanisms are connected with the motors; the limiting column is connected with the lead screw linear motion mechanism, and the part, extending out of the upper base or the lower base, of the limiting column is adjusted through a motor; when the double-sided flexible equipment is used for forming a product, the position of the limiting column is controlled through the motor, the upper base and the lower base are driven to move and form a forming cavity used for material foaming, and foam particles used for foaming are conveyed into the forming cavity and subjected to foaming treatment to form the shape of a mold; the formed injection molding part does not need to be subjected to secondary or even multiple machining work, the injection molding part formed through the method only needs to be simply ground, a final product can be formed, and the whole production process of the injection molding part is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding, and in particular to a double-sided flexible device for dynamically adjusting a mold cavity and an injection molding device. Background Art

[0002] Mold injection molding is a process in which thermoplastic or thermosetting plastics are heated and melted in an injection molding machine, injected into a mold cavity under high pressure, and cooled and solidified to form a shape. By designing and manufacturing molds to precisely shape products, it can achieve automated and large-scale production, with high production efficiency, good product accuracy and quality.

[0003] For example, a Chinese patent application with the publication number CN117962226A discloses a PVC blowing injection molding device, including a fixed bracket; a rotating disk and a rotating mechanism, the rotating disk is rotatably installed on the fixed bracket, and the rotating mechanism is in transmission connection with the rotating disk for driving the rotating disk to rotate; a concave mold, the concave mold is horizontally slidably installed on the rotating disk; a convex mold group, the convex mold group includes a first convex mold and a second convex mold fixedly installed on the fixed bracket, the first convex mold is used to cooperate with the concave mold for the first injection molding, and the second convex mold is used to cooperate with the concave mold for the second injection molding; a pushing mechanism, the pushing mechanism is used to drive the concave mold to horizontally slide on the rotating disk in a direction close to or away from the convex mold group after the concave mold rotates to a position aligned with the convex mold group; a blowing and heating mechanism, the blowing and heating mechanism is fixedly installed on the fixed bracket and is used to spray hot air to heat the product formed after the first injection molding before the second injection molding.

[0004] However, there are still some problems with the above device. In order to obtain special-shaped injection molded parts, the above device or traditional injection molding methods require operators to adjust the running trajectory of the processing device according to the drawings so that it can complete the preliminary processing of the injection molded parts. Then, the operators manually polish the injection molded parts to complete the final product. The overall steps of this method are relatively complex, affecting the work efficiency of the operators.

[0005] Therefore, how to improve the molding process of injection molded parts and simplify the molding process is a problem to be solved currently. Summary of the Invention

[0006] The present invention provides a double-sided flexible device for dynamically adjusting a mold cavity and an injection molding device to solve the above problems existing in the prior art.

[0007] The double-sided flexible device for dynamically adjusting a mold cavity includes an upper base and a lower base, which have the same structure and are symmetrically arranged; A plurality of motors are evenly arranged on the upper base or the lower base, and a screw linear motion mechanism connected to the motors; A limit post, connected to the linear motion mechanism of the lead screw, and the extended part of the limit post on the upper base or the lower base is adjusted by a motor; When the double-sided flexible device forms a product, the position of the limit post is controlled by the motor, driving the upper base and the lower base to move and form a forming cavity for material foaming. Foam particles for foaming are conveyed into the forming cavity and undergo foaming treatment to form the shape of the mold.

[0008] An injection molding device obtains a product from a double-sided flexible device with dynamically adjustable mold cavities, embeds the product in a sand mold, and pours molten metal into the sand mold under a vacuum state to form a mold with the same shape as the product model. The injection molding device includes: A mold, including a fixed mold and a movable mold, which is used to solidify materials in the cavity between the fixed mold and the movable mold; The injection molding device further includes: Multiple cores, evenly arranged on the fixed mold, are spherical structures, and a placement cavity is provided on the cores; A demolding assembly, located in the placement cavity, is used for demolding the solidified spherical product; The demolding assembly includes a mounting seat located in the placement cavity, an exhaust cavity opened in the mounting seat, an adjusting part located in the exhaust cavity, an air inlet nozzle provided on the mounting seat, and at least two annular sieves sleeved on the mounting seat; Wherein the air holes on the annular sieve and the air inlet nozzle are respectively communicated with the exhaust cavity; wherein the solidified spherical product has a certain deformation ability.

[0009] Further, the adjusting part includes a mounting chamber built in the exhaust cavity, an adjusting nozzle communicated with the mounting chamber, a movable block located in the mounting chamber and slidably connected to the mounting chamber, an adjusting spring is further provided between one end of the movable block and the mounting chamber, and an ejecting rod connected to the movable block; A through hole is further provided on the mounting seat, and the ejecting rod penetrates through the through hole; By changing the amount of gas in the mounting chamber, the deformation amount of the adjusting spring is changed, so that the ejecting rod demolds the solidified spherical product.

[0010] Further, the adjusting part further includes a distribution plate sleeved on the ejecting rod and located in the exhaust cavity, a return spring is further provided between one end of the distribution plate and the exhaust cavity, and a sealing block sleeved on the ejecting rod; The diameter of the sealing block is larger than the diameter of the through hole, so that the sealing block blocks the through hole, enabling the gas to be discharged from the air holes on the annular sieve; A plurality of ventilation holes are further provided in the axial direction of the distribution plate; The reset spring and the adjusting spring are located on both sides of the distribution plate.

[0011] Furthermore, two sealing rings are symmetrically arranged on the distribution plate, and there is a gap between the outer wall of the distribution plate and the inner wall of the exhaust cavity; The mounting seat includes an upper shell and a lower shell screwed to the upper shell. The distribution plate is located between the upper shell and the lower shell. In the axial direction of the distribution plate, there are preset gaps between the distribution plate and the upper shell and the lower shell respectively; During the process of the ejector rod ejecting, by changing the position of the distribution plate, the gas is ejected from different annular sieves. When the ejector rod is at the maximum ejection position, the gas flow rate ejected from the annular sieve is the largest at this time, so that the spherical product deforms and detaches from the core.

[0012] Furthermore, the air outlet end of the exhaust cavity is provided with a trumpet-shaped air outlet, and the movable block is trumpet-shaped, wherein the diameter corresponding to the flared end of the movable block is larger than the diameter corresponding to the narrow end of the exhaust cavity.

[0013] In a further embodiment, an injection molding device further includes a manipulator and a limiting component arranged on the manipulator for performing a limiting and clamping operation on the produced spherical product; The limiting component includes a socket fixedly installed on the manipulator, two bases symmetrically arranged on the socket, a limiting part connected to the bases, and an elastic cover arranged on the limiting part; The limiting parts are symmetrically arranged. There is a placement opening on one side of the socket, and the spherical product is located inside the socket through the placement opening.

[0014] Furthermore, the limiting part includes a plurality of brackets fixedly installed on the base, a connecting rod movably connected to the brackets, a driving wheel arranged at one end of the connecting rod, a movable wheel installed at the other end of the connecting rod, a plurality of rotating shafts evenly arranged on the base, a rotating plate movably connected to the rotating shafts, and a driving rod arranged on the rotating plate; The driving rod is connected to the elastic cover, and the movable wheel abuts against the rotating plate; By changing the position of the driving rod, the deformation amount of the elastic cover is changed, and the limiting work on the spherical product is completed, avoiding excessive gas blowing and causing the spherical product to explode.

[0015] Furthermore, a telescopic cylinder is arranged on one of the limiting parts, and a reset part is arranged on the other limiting part. The output end of the telescopic cylinder and one end of the reset part are connected with a driving disc; The driving disc abuts against the driving wheel; The limiting part provided with the telescopic cylinder is closer to the core than the other limiting part; the connecting rod is of an L-shaped structure.

[0016] Further, the reset part includes a fixed seat and a connecting rod respectively installed on the driving disk and the base. The fixed seat is sleeved on the connecting rod. An annular protrusion is provided on the connecting rod, and a connecting spring for connecting the annular protrusion and the fixed seat; A limiting seat is also sleeved on the connecting rod, and the limiting seat is connected to the fixed seat.

[0017] Beneficial effects: The present invention discloses a double-sided flexible device for dynamically adjusting a mold cavity and an injection molding device. In order to simplify the processing process of injection molded parts, on the premise of knowing the shape of the final injection molded part, the operator calculates the required material and shape of the final injection molded part, models the injection molded part according to its shape, and then makes each motor start to work according to the result to adjust the position of the limiting column, so that there is a molding cavity between the upper base and the lower base. When the double-sided flexible device forms a product, the position of the limiting column is controlled by the motor to drive the upper base and the lower base to move and form a molding cavity for material foaming. The foam particles for foaming are conveyed into the molding cavity, and after foaming treatment, the shape of the mold is formed, and the molded product is polished to form the final product; thus, there is no need to perform secondary or even multiple processing operations on the molded injection molded part. The injection molded part formed by the above method only needs to be simply polished to form the final product, simplifying the entire production process of the injection molded part, and the shape of the injection molded part can be changed, improving the applicability of the device; at the same time, in order to complete the demolding of the product and the collection of the product; thus, a demolding component and a limiting component are provided in this device. After the injection molding machine completes the injection molding work, the demolding component starts to work at this time. By connecting an air pump externally, the intake nozzle can be used to inflate the exhaust cavity in the mounting seat, and then the gas can impact the spherical product axially to complete the preliminary demolding work of the spherical product. Then, by ventilating the adjustment nozzle, the position of the distribution disk can be changed, and the flow direction of the air flow can be changed during the ejection process of the ejector rod, so that the air flow can exhaust along the radial direction of the ejector rod, cooperating with the movement of the ejector rod, and thus completing the demolding work of the spherical product. And through the provided limiting component, when the flow rate of the blown air flow is too large and causes the product to have a large displacement or when the product has a large deformation due to the presence of more gas in the product, the limiting part can move, so that the protective cover is in a contracted state, thereby playing a role in limiting and wrapping the product. By squeezing the product, the gas in the product can move along the axis direction of the ejector rod to complete the limiting and demolding work of the product. Through the cooperation of the above two structures, the demolding and limiting work of the spherical product can be completed, avoiding damage to the spherical product and ensuring the smooth progress of the demolding work. Description of the Drawings

[0018] Figure 1Schematic diagram of a double-sided flexible device for dynamically adjusting the mold cavity of the present invention; Figure 2 Schematic diagram of the injection molding equipment of the present invention; Figure 3 Schematic diagram of the mold structure of the present invention; Figure 4 Schematic diagram of the structure of the limit component of the present invention; Figure 5 Schematic diagram of the structure of the limit part of the present invention; Figure 6 Schematic diagram of the driving disk of the present invention; Figure 7 Schematic diagram of the structure of the reset part of the present invention; Figure 8 Schematic diagram of one cross-section of the demolding component of the present invention; Figure 9 Schematic diagram of the structure of the ejector rod of the present invention; Figure 10 Schematic diagram of another cross-section of the demolding component of the present invention.

[0019] Reference numerals: 1, injection molding machine; 2, mold; 3, core; 4, manipulator; 5, limit component; 51, socket; 52, limit part; 521, driving disk; 522, bracket; 523, connecting rod; 524, driving wheel; 525, movable wheel; 526, rotating shaft; 527, rotating plate; 528, driving rod; 53, elastic cover; 54, reset part; 541, fixed seat; 542, connecting rod; 543, limit seat; 544, connecting spring; 55, base; 6, demolding component; 61, mounting seat; 62, adjusting nozzle; 63, adjusting part; 631, installation chamber; 632, adjusting spring; 633, movable block; 634, distribution disk; 635, sealing block; 636, sealing ring; 637, reset spring; 64, air inlet nozzle; 65, exhaust cavity; 66, ejector rod; 67, annular sieve; 7, upper base; 8, lower base; 9, motor; 10, limit column. Detailed implementation manners

[0020] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the drawings of the specification.

[0021] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0022] Secondly, the "one embodiment" or "embodiment" referred to herein means a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The phrase "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is separate from or mutually exclusive of other embodiments selectively.

[0023] The present invention discloses a double-sided flexible device machine for dynamically adjusting a mold cavity and an injection molding device. Referring to Figures 1-10 , it includes: The double-sided flexible device machine for dynamically adjusting a mold cavity includes an upper base 7 and a lower base 8, which have the same structure and are symmetrically arranged; a plurality of motors 9, which are evenly arranged on the upper base 7 or the lower base 8, and a lead screw linear motion mechanism connected to the motors 9; a limit post 10, which is connected to the lead screw linear motion mechanism, and the extended part of the limit post 10 from the upper base 7 or the lower base 8 is adjusted by the motor 9; during operation, by calculating and modeling the material and shape required for the product, and according to the result, each motor 9 starts to work to adjust the position of the limit post 10, so that there is a molding cavity between the upper base 7 and the lower base 8. When the double-sided flexible device forms the product, the position of the limit post 10 is controlled by the motor 9 to drive the upper base 7 and the lower base 8 to move and form a molding cavity for material foaming, the foam particles for foaming are conveyed into the molding cavity, and after foaming treatment, the shape of the mold is formed, and the molded product is polished to form the final product; on the premise of knowing the shape of the final injection molded part, the operator calculates the material and shape required for the final injection molded part, models the injection molded part according to its shape, and then according to the result, each motor 9 starts to work to adjust the position of the limit post 10, so that there is a molding cavity between the upper base 7 and the lower base 8, injects into it, and polishes the molded product to form the final product; furthermore, it is not necessary to perform secondary or even multiple processing operations on the molded injection molded part. The injection molded part formed by the above method only needs to be simply polished to form the final product, simplifying the entire production process of the injection molded part, and the shape of the injection molded part can be changed, improving the applicability of the device.

[0024] An injection molding device, comprising: a mold 2, including a fixed mold and a movable mold, the mold 2 being used for curing materials in the cavities of the fixed mold and the movable mold; a plurality of cores 3 evenly arranged on the fixed mold, having a spherical structure, and a placement cavity is formed on the core 3; a demolding assembly 6 located in the placement cavity for demolding the cured spherical product; the demolding assembly 6 includes a mounting seat 61 located in the placement cavity, an exhaust cavity 65 is formed in the mounting seat 61, an adjusting part 63 located in the exhaust cavity 65, an air inlet nozzle 64 arranged on the mounting seat 61, and at least two annular sieves 67 sleeved on the mounting seat 61; wherein the air holes on the annular sieve 67 and the air inlet nozzle 64 are respectively communicated with the exhaust cavity 65; through the arranged limiting assembly 5, when the flow rate of the blown air is too large and causes a large displacement of the product or when the product has a large deformation due to the presence of a large amount of gas in the product, the limiting part 52 can be moved, so that the protective cover is in a contracted state, thereby playing a role of limiting and wrapping the product. By extruding the product, the gas in the product can move along the axial direction of the ejector rod 66, completing the limiting and demolding work of the product. Through the cooperation of the above two structures, the demolding and limiting work of the spherical product can be completed, avoiding damage to the spherical product and ensuring the smooth progress of the demolding work.

[0025] The adjusting part 63 includes an installation chamber 631 built in the exhaust chamber 65, an adjusting nozzle 62 communicated with the installation chamber 631, a movable block 633 located in the installation chamber 631 and slidably connected with the installation chamber 631. An adjusting spring 632 is further arranged between one end of the movable block 633 and the installation chamber 631, and an ejector rod 66 connected with the movable block 633; A through hole is further arranged on the mounting seat 61, and the ejector rod 66 penetrates through the through hole; By changing the gas volume in the installation chamber 631, the deformation amount of the adjusting spring 632 is changed, so that the ejector rod 66 demolds the solidified spherical product; The adjusting part 63 further includes a distribution plate 634 sleeved on the ejector rod 66 and located in the exhaust chamber 65. A return spring 637 is further arranged between one end of the distribution plate 634 and the exhaust chamber 65, and a sealing block 635 sleeved on the ejector rod 66; The diameter of the sealing block 635 is larger than the diameter of the through hole, so that the sealing block 635 blocks the through hole, and the gas can be discharged from the air holes on the annular sieve 67; A plurality of ventilation holes are further arranged axially on the distribution plate 634; After the injection molding machine 1 finishes the injection molding work, at this time, the demolding assembly 6 starts to work. Through an external air pump, the air inlet nozzle 64 can inflate the exhaust chamber 65 in the mounting seat 61, and then the gas can impact the spherical product axially to complete the preliminary demolding work of the spherical product. Then, by ventilating the adjusting nozzle 62, the position of the distribution plate 634 is changed. As the distribution plate 634 moves, the ejector rod 66 can also perform the ejecting work, and further can complete the ejecting and demolding work of the spherical product or other shaped products.

[0026] Two sealing rings 636 are symmetrically arranged on the distribution plate 634, and there is a certain gap between the outer wall of the distribution plate 634 and the inner wall of the exhaust chamber 65; the mounting seat 61 includes an upper shell and a lower shell screwed to the upper shell, the distribution plate 634 is located between the upper shell and the lower shell, and in the axial direction of the distribution plate 634, there is a certain gap between the distribution plate 634 and the upper shell and the lower shell; during the ejection process of the ejection rod 66, by changing the position of the distribution plate 634, the gas is ejected from different annular screens 67. When the ejection rod 66 is in the maximum ejection position, the gas flow ejected from the annular screen 67 is the largest, thereby deforming the spherical product and causing it to detach from the core 3; as the distribution plate 634 moves, the distribution plate 634 is close to the core 3. The gap between the sealing ring 636 near one end of the through hole and the lower shell body becomes smaller, so the airflow in the annular screen 67 near one end of the through hole changes from large to small, while the airflow through the other annular screen 67 gradually becomes larger, so that the axial movement of the airflow can be achieved, and in this process, the ejector rod 66 can also perform the ejection work. When the ejector rod 66 is displaced to the farthest distance, the sealing block 635 abuts against the through hole, thereby increasing the amount of air discharged from the annular screen 67 and cooperating with the work of the ejector rod 66 to complete the demolding of the product; at the same time, by adjusting the blowing position and size of the gas and the product, the airflow at the position of the product bottle mouth becomes larger during demolding, thereby avoiding the product neck and the core 3 from fitting too closely, and increasing the demolding strength, ensuring the smooth progress of the demolding work.

[0027] The outlet end of the exhaust chamber 65 is provided with a trumpet-shaped outlet, and the movable block 633 is trumpet-shaped, wherein the diameter corresponding to the expanded end of the movable block 633 is larger than the diameter corresponding to the narrow end of the exhaust chamber 65; through the above-mentioned structure, the movable block 633 can be moved in the installation chamber 631, and the movable block 633 will not separate from the installation chamber 631, thereby ensuring the stability of the device.

[0028] An injection molding device further includes a manipulator 4 disposed on the injection molding machine 1, and a limiting assembly 5 disposed on the manipulator 4 for performing a limiting and clamping operation on the spherical products produced in the cavity of the mold 2; the limiting assembly 5 includes a socket 51 fixedly installed on the manipulator 4, two bases 55 symmetrically arranged on the socket 51, a limiting portion 52 connected to the base 55, and an elastic cover 53 disposed on the limiting portion 52; the limiting portions 52 are symmetrically arranged, and a placement opening is provided on one side of the socket 51, and the spherical products are located inside the socket 51 through the placement opening; the limiting portion 52 includes a plurality of brackets 522 fixedly installed on the base 55, a connecting rod 523 movably connected to the bracket 522, a driving wheel 524 disposed at one end of the connecting rod 523, a movable wheel 525 installed at the other end of the connecting rod 523, a plurality of rotating shafts 526 uniformly arranged on the base 55, a rotating plate 527 movably connected to the rotating shaft 526, and a driving rod 528 disposed on the rotating plate 527; the driving rod 528 is connected to the elastic cover 53, and the movable wheel 525 abuts against the rotating plate 527; by changing the position of the driving rod 528, the deformation amount of the elastic cover 53 is changed, and the limiting operation on the spherical products is completed, avoiding excessive gas injection and causing the spherical products to explode; a torsion spring is provided between the rotating shaft 526 and the rotating plate 527 and between the bracket 522 and the connecting rod 523 to ensure the stability of the device; During the demolding process, since gas is filled into the products, the products will deform. The deformed products will abut against the driving disk 521 connected to the reset portion 54, and then the driving disk 521 can be moved. The moving driving disk 521 can drive the driving wheel 524 to move, so that the connecting rod 523 rotates on the bracket 522, and then drives the movable wheel 525 to move. Since the movable wheel 525 abuts against the rotating plate 527, the rotating plate 527 drives the driving rod 528 to move, so that the elastic cover 53 is in a contracted state, and the limiting operation on the spherical products is completed, avoiding excessive deformation and causing the spherical products to be blown up. At the same time, through the contraction of the elastic cover 53, it can also play a role in extruding the spherical products. The gas in the spherical products can move from the main body part of the spherical products to the neck part and be discharged. During this process, the neck part of the products can be demolded for the second time to complete the demolding work. At this time, the driving disk 521 returns to the initial position.

[0029] A telescopic cylinder is provided on one of the limiting parts 52, and a reset part 54 is provided on the other limiting part 52. The output end of the telescopic cylinder and one end of the reset part 54 are connected with a driving disc 521; the driving disc 521 abuts against the driving wheel 524; the limiting part 52 provided with the telescopic cylinder is closer to the core 3 than the other limiting part 52; the reset part 54 includes a fixed seat 541 and a connecting rod 542 respectively installed on the driving disc 521 and the base 55. The fixed seat 541 is sleeved on the connecting rod 542. An annular protrusion is provided on the connecting rod 542, and a connecting spring 544 for connecting the annular protrusion and the fixed seat 541; a limiting seat 543 is also sleeved on the connecting rod 542, and the limiting seat 543 is connected with the fixed seat 541; during the movement of the driving disc 521, a relative displacement will occur between the fixed seat 541 and the connecting rod 542. Thus, when the spherical product returns to its initial state, at this time, under the action of the connecting spring 544, the driving disc 521 can be located at the initial position to ensure the next operation.

[0030] When the driving disc 521 is in the initial position, there is a predetermined gap between one end of the distribution disc 634 close to the through hole and the lower housing, while the sealing ring 636 at the other end of the distribution disc 634 abuts against the upper housing.

[0031] This device is also additionally provided with an injection molding machine 1. The mold 2 is located on the injection molding machine 1. The injection molding machine 1 is a prior art; in a further embodiment, where Figure 8 and Figure 10 The cross-sections used in the schematic diagram are divided into a first cross-section and a second cross-section. There is a predetermined angle between the first cross-section and the second cross-section. The second cross-section passes through the air inlet nozzle 64 and cuts the air inlet nozzle 64 into two parts with the same shape. Working principle description: After the injection molding machine 1 completes the injection molding work, at this time, the demolding assembly 6 starts to work. Through an external air pump, the air inlet nozzle 64 can inflate the exhaust cavity 65 in the mounting seat 61. Then the gas can impact the spherical product axially to complete the preliminary demolding work of the spherical product. Then, by ventilating the adjusting nozzle 62, the position of the distribution disc 634 is changed. As the distribution disc 634 moves, the gap between the sealing ring 636 at one end of the distribution disc 634 close to the through hole and the lower housing becomes smaller. Therefore, the air flow in the annular sieve 67 at the end close to the through hole decreases from large to small, while the air flow through the other annular sieve 67 gradually increases. Therefore, the axial movement of the air flow and the change of the air flow rate can be realized. During this process, the ejector rod 66 can also perform the ejecting work. When the ejector rod 66 is displaced to the farthest distance, at this time, the sealing block 635 abuts against the through hole, thereby increasing the air flow rate discharged from the annular sieve 67 and cooperating with the work of the ejector rod 66 to complete the demolding work of the product. During the demolding process, since gas is filled into the product, the product will deform. The deformed product will abut against the driving disk 521 connected to the reset portion 54, thereby enabling the driving disk 521 to move. The moving driving disk 521 can drive the driving wheel 524 to move, so that the connecting rod 523 rotates on the bracket 522, driving the movable wheel 525 to move. Since the movable wheel 525 abuts against the rotating plate 527, the rotating plate 527 drives the driving rod 528 to move, so that the elastic cover 53 is in a contracted state, completing the limiting work on the spherical product, avoiding excessive deformation and preventing the spherical product from being blown up. At the same time, through the contraction of the elastic cover 53, it can also squeeze the spherical product. The gas in the spherical product can move from the main body part of the spherical product to the neck part and be discharged. During this process, the neck part of the product can be demolded for the second time to complete the demolding work. At this time, the driving disk 521 returns to its initial position; After the demolding work is completed, the telescopic cylinder starts to work, which can drive another limiting portion 52 to work, causing the elastic cover 53 in the limiting portion 52 to contract, abut against the spherical product and clamp it. Then, with the cooperation of the manipulator 4, the handling work of the product is completed. The protective cover provided plays a flexible protection effect to avoid damage to the product.

[0032] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the protection scope of the present invention.

Claims

1. A double-sided flexible device for dynamically adjusting a mold cavity, characterized in that Comprising: An upper base (7) and a lower base (8), having the same structure and being symmetrically arranged; A plurality of motors (9), evenly arranged on the upper base (7) or the lower base (8), and a lead screw linear motion mechanism connected to the motors (9); A limit post (10), connected to the lead screw linear motion mechanism, and the extended part of the limit post (10) from the upper base (7) or the lower base (8) is adjusted by the motor (9); When the double-sided flexible device forms a product, the position of the limit post (10) is controlled by the motor (9), driving the upper base (7) and the lower base (8) to move and form a forming cavity for material foaming, and foam particles for foaming are transported into the forming cavity, and after foaming treatment, the shape of the mold is formed.

2. An injection molding device, which obtains a product by using the double-sided flexible device for dynamically adjusting the mold cavity as described in claim 1, embeds the product in a sand mold, and pours molten metal into the sand mold under a vacuum state to form a mold (2) with the same shape as the product model, characterized in that Comprising: The mold (2) includes a fixed mold and a movable mold, and the mold (2) is used for curing materials in the cavity between the fixed mold and the movable mold; The injection molding device further includes: A plurality of core molds (3), evenly arranged on the fixed mold, having a spherical structure, and a placement cavity is formed on the core mold (3); A demolding assembly (6), located in the placement cavity, for demolding the cured spherical product; The demolding assembly (6) includes a mounting seat (61) located in the placement cavity, an exhaust cavity (65) is formed in the mounting seat (61), an adjusting part (63) located in the exhaust cavity (65), an air inlet nozzle (64) arranged on the mounting seat (61), and at least two annular sieves (67) sleeved on the mounting seat (61); Wherein the air holes on the annular sieve (67) and the air inlet nozzle (64) are respectively communicated with the exhaust cavity (65).

3. An injection molding device according to claim 2, characterized in that: The adjusting part (63) includes a mounting chamber (631) built in the exhaust cavity (65), an adjusting nozzle (62) communicated with the mounting chamber (631), a movable block (633) located in the mounting chamber (631) and slidably connected to the mounting chamber (631), an adjusting spring (632) is further arranged between one end of the movable block (633) and the mounting chamber (631), and an ejector rod (66) connected to the movable block (633); A through hole is further arranged on the mounting seat (61), and the ejector rod (66) penetrates through the through hole; By changing the gas amount in the mounting chamber (631), the deformation amount of the adjusting spring (632) is changed, so that the ejector rod (66) demolds the cured spherical product.

4. An injection molding device according to claim 3, characterized in that: The adjusting part (63) further includes a distribution plate (634) sleeved on the ejector rod (66) and located in the exhaust cavity (65), a return spring (637) is further arranged between one end of the distribution plate (634) and the exhaust cavity (65), and a sealing block (635) sleeved on the ejector rod (66); The diameter of the sealing block (635) is larger than the diameter of the through hole, so that the sealing block (635) blocks the through hole, and the gas can be discharged from the air holes on the annular sieve (67); A plurality of ventilation holes are further arranged axially on the distribution plate (634).

5. An injection molding device according to claim 4, characterized in that: Two sealing rings (636) are symmetrically arranged on the distribution plate (634), and there is a gap between the outer wall of the distribution plate (634) and the inner wall of the exhaust cavity (65); The mounting seat (61) includes an upper shell and a lower shell screwed to the upper shell. The distribution plate (634) is located between the upper shell and the lower shell. In the axial direction of the distribution plate (634), a preset gap exists between the distribution plate (634) and both the upper shell and the lower shell; During the process of the ejector rod (66) ejecting, by changing the position of the distribution plate (634), gas is ejected from different annular sieves (67). When the ejector rod (66) is in the maximum ejection position, the gas flow rate ejected from the annular sieve (67) is the largest at this time, so that the spherical product deforms and detaches from the core (3).

6. An injection molding device according to claim 5, characterized in that: The air outlet end of the exhaust cavity (65) is provided with a trumpet-shaped air outlet, and the movable block (633) is trumpet-shaped, wherein the diameter corresponding to the flared end of the movable block (633) is larger than the diameter corresponding to the narrow end of the exhaust cavity (65).

7. An injection molding device according to claim 6, characterized in that: It further includes a manipulator (4) and a limiting component (5) arranged on the manipulator (4) for performing a limiting and clamping operation on the produced spherical product; The limiting component (5) includes a socket (51) fixedly installed on the manipulator (4), two bases (55) symmetrically arranged on the socket (51), a limiting part (52) connected to the base (55), and an elastic cover (53) arranged on the limiting part (52); The limiting parts (52) are symmetrically arranged. A placement opening is provided on one side of the socket (51), and the spherical product is located inside the socket (51) through the placement opening.

8. An injection molding device according to claim 7, characterized in that: The limiting part (52) includes a plurality of brackets (522) fixedly installed on the base (55), a connecting rod (523) movably connected to the bracket (522), a driving wheel (524) arranged at one end of the connecting rod (523), a movable wheel (525) installed at the other end of the connecting rod (523), a plurality of rotating shafts (526) evenly arranged on the base (55), a rotating plate (527) movably connected to the rotating shaft (526), and a driving rod (528) arranged on the rotating plate (527); The driving rod (528) is connected to the elastic cover (53), and the movable wheel (525) abuts against the rotating plate (527); By changing the position of the driving rod (528), the deformation amount of the elastic cover (53) is changed, and the limiting work on the spherical product is completed.

9. An injection molding device according to claim 8, characterized in that: A telescopic cylinder is arranged on one of the limiting parts (52), and a reset part (54) is arranged on the other limiting part (52). The output end of the telescopic cylinder and one end of the reset part (54) are connected with a driving disk (521); The driving disk (521) abuts against the driving wheel (524); The limiting part (52) provided with the telescopic cylinder is closer to the core (3) than the other limiting part (52).

10. An injection molding device according to claim 9, characterized in that: The reset portion (54) includes a fixed seat (541) and a connecting rod (542) respectively mounted on the driving disk (521) and the base (55). The fixed seat (541) is sleeved on the connecting rod (542). An annular protrusion is provided on the connecting rod (542), and a connecting spring (544) for connecting the annular protrusion and the fixed seat (541); A limit seat (543) is also sleeved on the connecting rod (542), and the limit seat (543) is connected to the fixed seat (541).

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