An adaptive rapid demoulding mechanism for complex plastic molds

Abstract

The present invention discloses an adaptive rapid demoulding mechanism for a complex plastic mold, comprising a bottom plate and a top plate, wherein a molding part is installed on the adjacent sides of the bottom plate and the top plate, and the upper and lower groups of the molding parts cooperate to form a complex plastic mold, wherein the molding part comprises a support plate and a molding plate, wherein the support plates in the upper and lower groups of the molding parts are respectively fixed to the top plate and the bottom plate, and the outer side of the support plate is fixed to the molding plate; a molding cavity for complex plastic molding is provided on the outer side of the molding plate, and a molding sheet capable of moving in and out is provided inside the molding cavity. The present invention moves the molding sheet toward the first separation groove, and the gas in the first separation groove can move from the first circular air hole and the second circular air hole to the second separation groove, and the second separation groove is in a grid shape, so as to impact the complex plastic in a large range, separate the complex plastic from the mold, and avoid deformation of the complex plastic as much as possible, and also improve the processing efficiency of the complex plastic.

Description

Technical Field

[0001] The invention relates to the technical field of plastic mold demoulding, in particular to an adaptive rapid demoulding mechanism for a complex plastic mold. Background Art

[0002] Complex plastic molds refer to those with complex structures, high precision requirements and specific functional requirements. These molds are usually used to produce plastic products with complex shapes, high precision dimensions and special properties. When demolding complex plastic molds, an appropriate amount of mold release agent can be applied to the mold surface to reduce the friction between the mold and the plastic part, thereby achieving rapid demolding. Vibration equipment can also be used to vibrate the mold to accelerate the demolding process of the plastic part, but it should be noted that the vibration frequency and amplitude should be reasonably set according to the shape and size of the plastic part to avoid damage to the plastic part. In addition, for large-scale production of complex plastic molds, an automated demolding system can be considered. The system uses a power source such as an electric motor to drive the ejection mechanism for demolding operations, which can achieve a fast and accurate demolding process and improve production efficiency.

[0003] However, based on the above-mentioned demolding methods, for complex plastics that are difficult to remove, manual demolding is required, and the surface of the complex plastic needs to be subjected to force. For the entire complex plastic, some parts of the complex plastic are still in the mold, while some parts are detached, causing the complex plastic to be subjected to a tensile force. In addition, the edge of the complex plastic needs to be separated from the mold little by little, which can easily reduce the demolding efficiency. If the ejection is performed using an ejection mechanism, the force area is small, and the complex plastic is easily damaged. Based on this, the complex plastic needs to be separated and the damage to the complex plastic needs to be minimized. Summary of the invention

[0004] The object of the present invention is to provide a complex plastic mold adaptive rapid demoulding mechanism to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an adaptive rapid demoulding mechanism for a complex plastic mold, comprising a bottom plate and a top plate, wherein the bottom plate and the top plate are both provided with a molding part on their adjacent sides, and the upper and lower groups of the molding parts cooperate to form a complex plastic mold, wherein the molding part comprises a supporting plate and a molding plate, wherein the supporting plates in the upper and lower groups of the molding parts are respectively fixed to the top plate and the bottom plate, and the outer side of the supporting plate is fixed to the molding plate;

[0006] A molding cavity for complex plastic molding is provided on the outside of the molding plate, and a molding sheet capable of moving inwards and outwards is provided inside the molding cavity, and the molding sheet is used to open and close the molding cavity for venting air.

[0007] Furthermore, a second separation groove is provided through the inner wall of the molding cavity of the molding plate, and the interior of the molding plate is divided into a plurality of molding blocks by the second separation groove, and the molding sheet is embedded in the second separation groove, and the molding sheet cooperates with the molding block;

[0008] The support plate is provided with a first dividing groove overlapping with the second dividing groove, one side of the dividing groove is connected to the outside, and the lower end of the forming sheet extends into the first dividing groove;

[0009] Through the complex plastic molding in the molding cavity, the molding sheet moves outward to the first separation groove, and the gas moving from the outside into the first separation groove moves into the second separation groove, thereby impacting the complex plastic.

[0010] Furthermore, the first dividing groove, the second dividing groove and the forming sheet are all in a grid shape, so as to increase the contact area between the gas and the complex plastic.

[0011] Furthermore, a circular air hole 1 is provided inside the dividing groove 1, and the circular air hole 1 extends along the shape of the dividing groove 1. After the dividing groove 1 is blocked by the forming sheet, the circular air hole 1 can still transmit the gas.

[0012] Furthermore, a second circular air hole is provided on the outer side surface of the molding block and extends downward into the first dividing groove. The second circular air hole is connected to the first circular air hole. When the complex plastic is molded in the molding cavity, the outer side surface of the molding sheet and the inner wall of the molding cavity form a flat surface. When the complex plastic is taken out, the molding sheet moves into the first dividing groove, and the second circular air hole is connected to the second dividing groove. The gas moves from the inside of the second dividing groove to the outside, thereby squeezing the complex plastic.

[0013] Furthermore, a supporting component for supporting the forming sheet is provided inside the supporting plate, a cavity opening connected to a dividing groove is opened inside the supporting plate, the supporting component includes a telescopic circle slidably arranged in the cavity opening, an inclined connecting rod is hinged between the telescopic circle and the forming sheet, and the position change of the telescopic circle is used to control the inward and outward movement of the forming sheet.

[0014] Furthermore, a baffle is fixed on the outer side of the support plate, a support spring is provided inside the cavity, the support spring is fixed to the telescopic circle, the support spring is used to support the telescopic circle, a through hole is opened on the baffle, and the hole is connected to the cavity.

[0015] Furthermore, the lower end surface of the support plate is provided with a cavity opening 2 which extends upward and is connected with a dividing groove 1. A baffle plate 2 is fixed to the lower end surface of the support plate. A hole is also passed through the baffle plate 2, and the hole is connected with the cavity opening 2. A support circle is sleeved inside the cavity opening 2. A support spring 2 for support is fixed to the outer end surface of the support circle. The inner end of the support circle is buckled into the telescopic circle.

[0016] Furthermore, the inner end of the support circle is arranged as a pointed tip extending upward, one side of the pointed tip facing the separation groove is vertical, and the other side is inclined.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0018] 1. The forming sheet moves toward the separation groove 1, and the gas in the separation groove 1 can move from the circular air hole 1 and the circular air hole 2 to the separation groove 2. The separation groove 2 is in a grid shape, which impacts the complex plastic in a large range, separates the complex plastic from the mold, avoids deformation of the complex plastic as much as possible, and improves the processing efficiency of the complex plastic.

[0019] 2. As the internal air pressure of the partition groove 1 gradually increases, the support circle is pushed first to ensure that the telescopic circle can perform telescopic movement. As the internal pressure of the partition groove 1 gradually increases, a thrust is also exerted on the forming sheet. The outer holes of the baffle 1 are connected to the pipeline, so that negative pressure is generated inside the cavity 1, and the forming sheet moves into the partition groove 1.

[0020] 3. The molding sheet moves into the separation groove, and the upper end of the molding sheet is separated from the complex plastic. The range of the complex plastic fitting the molding cavity will be reduced, and it will be easier to separate under the action of air pressure.

[0021] 4. The tip of the support circle cooperates with the telescopic circle to apply pressure to the outside of the molding sheet. The telescopic circle squeezes the vertical side of the tip of the support circle to prevent the telescopic circle from sliding, ensuring that the molded complex plastic maintains its complete shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the separated structure of the forming part of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the support plate and the forming plate of the present invention;

[0026] Figure 4 It is a schematic diagram of the support plate structure of the present invention;

[0027] Figure 5 It is a schematic diagram of a partial cross-sectional structure of a support plate of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the forming sheet and the support plate of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the support component of the present invention;

[0030] Figure 8 The present invention Figure 7 Schematic diagram of the locally enlarged structure of A in the middle.

[0031] In the figure: 1, bottom plate; 2, top plate; 3, forming part; 31, support plate; 311, partition groove 1; 312, circular air hole 1; 32, forming plate; 321, forming cavity; 322, partition groove 2; 33, forming block; 331, circular air hole 2; 34, forming sheet; 4, supporting component; 41, cavity opening 1; 42, telescopic circle; 43, connecting rod; 44, supporting spring 1; 45, baffle 1; 46, baffle 2; 47, cavity opening 2; 48, supporting circle; 49, supporting spring 2. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 8 The present invention provides a technical solution: when a complex plastic is molded, it needs to be molded in a mold. After the complex plastic is molded, it needs to be separated from the mold. There are many ways to separate the complex plastic. However, due to the complexity of the plastic, it is easy to cause damage when the complex plastic is separated. Therefore, it is necessary to quickly separate the complex plastic and avoid damage to the complex plastic. A complex plastic mold adaptive rapid demolding mechanism is proposed, such as Figure 1 and Figure 2 As shown, it includes a bottom plate 1 and a top plate 2. A molding part 3 is installed on the adjacent sides of the bottom plate 1 and the top plate 2. The upper and lower molding parts 3 cooperate with each other for complex plastic mold molding. The molding part 3 includes a support plate 31 and a molding plate 32. The support plates 31 in the upper and lower molding parts 3 are respectively fixed to the top plate 2 and the bottom plate 1. The outer side of the support plate 31 is fixed to the molding plate 32. The bottom plate 1 and the top plate 2 cooperate with each other to form a complete chamber, so that complex plastics can be molded inside the chamber.

[0034] like Figure 3As shown, when complex plastic is molded inside the molding cavity 321, it is necessary to separate the complex plastic from the molding cavity 321. A molding cavity 321 for molding complex plastic is opened on the outside of the molding plate 32. The molding cavity 321 has a molding sheet 34 that can move inward and outward. The molding sheet 34 is used to open and close the molding cavity 321 for air outlet. The molding sheet 34 puts the molding cavity 321 in a closed state, forming a part of the molding cavity 321, and fills the air intake part. After the molding sheet 34 moves, the molding sheet 34 is separated from the complex plastic, so that the contact area between the complex plastic and the molding cavity 321 is reduced, making it easier to separate the complex plastic from the molding cavity 321.

[0035] like Figure 3 As shown, the completed complex plastic needs to be separated from the molding cavity 321. The inner wall of the molding cavity 321 of the molding plate 32 is also penetrated with a second separation groove 322. The interior of the molding plate 32 is separated into multiple molding blocks 33 by the second separation groove 322. The molding sheet 34 is embedded in the second separation groove 322. The molding sheet 34 cooperates with the molding block 33. Before the complex plastic is separated, the molding sheet 34 is embedded in the second separation groove 322 and becomes a part of the molding cavity 321. When the complex plastic is separated later, the molding sheet 34 moves into the second separation groove 322 to separate the molding sheet 34 from the second separation groove 322. Then, air is discharged from the second separation groove 322 to blow away the complex plastic.

[0036] The outer side of the support plate 31 is provided with a first dividing groove 311 which overlaps with the second dividing groove 322. The side of the first dividing groove 311 is connected to the outside. The lower end of the forming sheet 34 extends into the first dividing groove 311. Figure 6 As shown, the forming sheet 34 moves toward the first dividing groove 311, so that the first circular air hole 312 and the second circular air hole 331 are connected, so that the air is discharged toward the second dividing groove 322;

[0037] Through the complex plastic molding in the molding cavity 321 , the molding sheet 34 moves outward to the first partition groove 311 , and the gas moving from the outside into the first partition groove 311 moves into the second partition groove 322 , impacting the complex plastic.

[0038] like Figure 5 As shown, the dividing groove 1 311, the dividing groove 2 322 and the molding sheet 34 are all in a grid shape, which is used to increase the contact area between the gas and the complex plastic. The grid-shaped molding sheet 34 is separated from the complex plastic, and the air inlet position of the complex plastic can be grid-shaped, so that the complex plastic can be gas-received at multiple locations, making it easy to separate the complex plastic from the molding cavity 321.

[0039] like Figure 5As shown, a circular air hole 312 is provided inside the partition groove 311 , and the circular air hole 312 extends along the shape of the partition groove 311 . After the partition groove 311 is blocked by the forming sheet 34 , the circular air hole 312 can still transmit gas.

[0040] like Figure 5 As shown, the outer side surface of the molding block 33 is provided with a circular air hole 331 extending downward into the dividing groove 1 311, and the circular air hole 331 is connected with the circular air hole 1 312. When the molding cavity 321 molds the complex plastic, the outer side surface of the molding sheet 34 forms a flat surface with the inner wall of the molding cavity 321. When the complex plastic is taken out, the molding sheet 34 moves toward the dividing groove 1 311, and the circular air hole 331 is connected with the dividing groove 2 322. The gas moves from the dividing groove 2 322 to the outside, squeezing the complex plastic. The circular air hole 1 312 and the circular air hole 2 331 are used to transmit the gas to prevent the molding sheet 34 from affecting the transmission of the gas. When the molding sheet 34 moves toward the dividing groove 1 311, the circular air hole 331 can be connected with the dividing groove 2 322 to realize the outward transmission of the gas and blow the complex plastic outward.

[0041] like Figure 7 and Figure 8 As shown, the interior of the support plate 31 is also provided with a support component 4 for supporting the forming sheet 34. The interior of the support plate 31 is provided with a cavity 41 connected to the dividing groove 311. The support component 4 includes a telescopic circle 42 slidably arranged in the cavity 41. An inclined connecting rod 43 is hinged between the telescopic circle 42 and the forming sheet 34. The position change of the telescopic circle 42 is used to control the inward and outward movement of the forming sheet 34.

[0042] A baffle 45 is fixed on the outside of the support plate 31, and a support spring 44 is provided inside the cavity 41. The support spring 44 is fixed to the telescopic circle 42, and the support spring 44 is used to support the telescopic circle 42. A through hole is opened on the baffle 45, and the hole is connected to the cavity 41. The through hole on the baffle 45 is used to change the air pressure in the cavity 41, so that the telescopic circle 42 can achieve the effect of telescoping, thereby controlling the movement of the forming sheet 34.

[0043] like Figure 8 As shown, when the outer side of the molding sheet 34 cooperates with the molding cavity 321 to mold complex plastics, it is necessary to prevent the molding sheet 34 from moving under the action of external force. The lower end surface of the support plate 31 is provided with a cavity opening 47 extending upward and communicating with the dividing groove 311. A baffle plate 46 is fixed to the lower end surface of the support plate 31. The baffle plate 46 also has holes passing through it, and the holes are connected to the cavity opening 47. A support circle 48 is sleeved in the cavity opening 47. A support spring 49 for support is fixed to the outer end surface of the support circle 48. The inner end of the support circle 48 is buckled into the telescopic circle 42, and the telescopic circle 42 is limited by the support circle 48 to prevent the telescopic circle 42 from moving.

[0044] The inner end of the support circle 48 is set as a pointed tip extending upward, with the tip facing one side of the dividing groove 311 in a vertical shape and the other side inclined. When the molding cavity 321 is filled with plastic, the molding sheet 34 is mainly squeezed. When the molding sheet 34 is squeezed, the vertical side of the tip of the support circle 48 is squeezed with the telescopic circle 42 to limit the telescopic circle 42.

[0045] The working principle of the present invention is as follows: plastic is extruded into a plastic mold, and a complex plastic is formed, and then demolding is required to separate the bottom plate 1 and the top plate 2, and gas is transported from the outside of the molding part 3 to the partition groove 1 311. As the gas pressure in the partition groove 1 311 gradually increases, the support component 4 is first deformed, and then the molding sheet 34 is moved toward the partition groove 1 311, so that the gas in the partition groove 1 311 can move from the circular air hole 1 312 and the circular air hole 2 331 to the partition groove 2 322. The outside of the partition groove 2 322 is the molded complex plastic. Since the partition groove 2 322 is in a grid shape, the complex plastic is impacted over a large range, so that the complex plastic is separated from the mold, and a separation force is applied to the complex plastic as a whole to a certain extent, so as to avoid deformation of the complex plastic as much as possible and improve the processing efficiency of the complex plastic.

[0046] When the complex plastic is molded as described above, under the action of the support component 4, the upper end surface of the molding sheet 34 cooperates with the inner wall of the molding cavity 321 to ensure that the molding cavity 321 can form the required shape to achieve complex plastic molding. The working principle of the support component 4 is that while the air pressure inside the separation groove 311 gradually increases, the support circle 48 is first pushed to ensure that the telescopic circle 42 can perform telescopic movement. Then, as the air pressure increases, the telescopic circle 42 moves inward at the cavity mouth 41, and the molding sheet 34 moves toward the separation groove 311, so that the gas moves outward from the separation groove 322 to separate the complex plastic. It should be noted that as the internal pressure of the separation groove 311 gradually increases, the molding sheet 34 is also thrust, and the outer hole of the baffle 45 is connected to the pipe to generate negative pressure inside the cavity mouth 41, which can also move the telescopic circle 42 toward the cavity mouth 41 to achieve the movement of the molding sheet 34 toward the separation groove 311.

[0047] When the molding sheet 34 moves into the separation groove 1 311 , the upper end of the molding sheet 34 will inevitably separate from the complex plastic, so that the range of the complex plastic and the molding cavity 321 fitting together will be reduced, and it will be easier to separate under the action of air pressure.

[0048] When the telescopic circle 42 is reset by the action of the support spring 1 44, the telescopic circle 42 is first brought into contact with the inclined surface of the tip of the support circle 48, so that the reset support circle 48 is again pressed against the support spring 2 49, and then the tip of the support circle 48 is directly snapped into the telescopic circle 42 to complete the limiting. It should be noted that when the tip of the support circle 48 cooperates with the telescopic circle 42, the upper end surface of the molding sheet 34 cooperates with the molding cavity 321, and when pressure is applied to the outside of the molding sheet 34, the telescopic circle 42 squeezes the vertical side of the tip of the support circle 48 to prevent the telescopic circle 42 from sliding, thereby ensuring that the molded complex plastic maintains a complete shape.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adaptive rapid demoulding mechanism for a complex plastic mold, comprising a bottom plate (1) and a top plate (2), wherein the bottom plate (1) and the top plate (2) are both provided with a molding part (3) on their adjacent sides, and the upper and lower groups of the molding parts (3) cooperate to form a complex plastic mold, and are characterized in that: The forming part (3) comprises a support plate (31) and a forming plate (32), wherein the support plates (31) in the upper and lower forming parts (3) are respectively fixed to the top plate (2) and the bottom plate (1), and the outer side of the support plate (31) is fixed to the forming plate (32); A molding cavity (321) for complex plastic molding is provided on the outside of the molding plate (32), and a molding sheet (34) capable of moving inwards and outwards is provided inside the molding cavity (321), and the molding sheet (34) is used to open and close the molding cavity (321) to vent air; The inner wall of the molding cavity (321) of the molding plate (32) is also penetrated by a second separation groove (322), the interior of the molding plate (32) is divided into a plurality of molding blocks (33) by the second separation groove (322), the molding sheet (34) is embedded in the second separation groove (322), and the molding sheet (34) cooperates with the molding blocks (33); The support plate (31) is provided with a first dividing groove (311) on the outside thereof, which is overlapped with the second dividing groove (322); the side of the first dividing groove (311) is communicated with the outside, and the lower end of the forming sheet (34) extends into the first dividing groove (311); By molding the complex plastic in the molding cavity (321), the molding sheet (34) moves outward into the first separation groove (311), and the gas moving from the outside into the first separation groove (311) moves into the second separation groove (322), thereby impacting the complex plastic; A circular air hole (312) is provided inside the first dividing groove (311), and the circular air hole (312) extends along the shape of the first dividing groove (311). After the first dividing groove (311) is blocked by the forming sheet (34), the circular air hole (312) can still transmit gas; The outer side surface of the molding block (33) is provided with a second circular air hole (331) extending downward into the first dividing groove (311), and the second circular air hole (331) is connected to the first circular air hole (312). When the complex plastic is molded in the molding cavity (321), the outer side surface of the molding sheet (34) and the inner wall of the molding cavity (321) form a flat surface. When the complex plastic is taken out, the molding sheet (34) moves into the first dividing groove (311), and the second circular air hole (331) is connected to the second dividing groove (322). The gas moves outward from the second dividing groove (322), thereby squeezing the complex plastic.

2. The complex plastic mold adaptive rapid demoulding mechanism according to claim 1, characterized in that: The first separation groove (311), the second separation groove (322) and the forming sheet (34) are all in a grid shape, and are used to increase the contact area between the gas and the complex plastic.

3. The complex plastic mold adaptive rapid demoulding mechanism according to claim 1, characterized in that: A support component (4) for supporting the forming sheet (34) is further provided inside the support plate (31); a cavity (41) communicating with the first separation groove (311) is provided inside the support plate (31); the support component (4) comprises a telescopic circle (42) slidably arranged inside the cavity (41); an inclined connecting rod (43) is hingedly connected between the telescopic circle (42) and the forming sheet (34); the position change of the telescopic circle (42) is used to control the inward and outward movement of the forming sheet (34).

4. The complex plastic mold adaptive rapid demoulding mechanism according to claim 3, characterized in that: A baffle plate 1 (45) is fixed on the outer side of the support plate (31), a support spring 1 (44) is provided inside the cavity opening 1 (41), the support spring 1 (44) is fixed to the telescopic circle (42), the support spring 1 (44) is used to support the telescopic circle (42), and a through hole is provided on the baffle plate 1 (45), and the hole is connected to the cavity opening 1 (41).

5. The complex plastic mold adaptive rapid demoulding mechanism according to claim 3, characterized in that: The lower end surface of the support plate (31) is provided with a second cavity (47) extending upward and communicating with the first separation groove (311); a second baffle plate (46) is fixed to the lower end surface of the support plate (31); a hole is also passed through the second baffle plate (46), and the hole is communicated with the second cavity (47); a support circle (48) is sleeved inside the second cavity (47); a second support spring (49) for support is fixed to the outer end surface of the support circle (48); the inner end of the support circle (48) is buckled into the telescopic circle (42).

6. The complex plastic mold adaptive rapid demoulding mechanism according to claim 5, characterized in that: The inner end of the support circle (48) is arranged in the form of a pointed tip extending upwards, with one side of the pointed tip facing the first separation groove (311) being vertical, and the other side being inclined.

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