A molding device and intelligent molding production line for foam parts

Abstract

This disclosure relates to the field of foam material processing technology, and more particularly to a molding device and an intelligent molding production line for foam parts. The molding die of the molding device includes two opposing molds, each mold comprising a template, a cavity, and a movable pin. The cavity and template of the molding device are connected by a sliding insertion method, and the width of the first connecting body of the slider and the width of the first groove of the slide gradually decrease along the insertion direction of the slider to prevent the slider from slipping out in the insertion direction. After the slider is inserted into place, the movable pin on the template firmly locks the cavity to the template to prevent the cavity from slipping off the template. Compared with the traditional bolt connection method, this invention can achieve rapid replacement between the cavity and the template without the need for a large number of bolts and fasteners, which helps to reduce assembly difficulty, improve the replacement efficiency of the cavity, and accelerate the production rhythm of foam parts.

Description

Technical Field

[0001] This disclosure relates to the field of foam material processing technology, and in particular to a molding device and an intelligent molding production line for foam parts. Background Technology

[0002] Refrigerators, as indispensable home appliances in modern households, are large, heavy, and have a delicate internal structure, making them highly susceptible to damage from collisions and drops during storage, loading and unloading, and long-distance transportation. Currently, refrigerator packaging primarily uses corrugated cardboard boxes and expandable polystyrene foam for cushioning protection. Expandable polystyrene foam is a lightweight polymer material with polystyrene resin as its matrix and a large number of closed-cell structures. Due to its excellent cushioning and energy absorption, heat insulation, and ease of processing and molding, it has been widely used in the refrigerator packaging industry.

[0003] Polystyrene foam is typically in granular form. A molding device uses high-temperature compression molding of large quantities of polystyrene foam granules to form sheet-like foam components. However, most molds on existing molding devices are not replaceable. When producing foam components of other shapes, it is often necessary to add a separate molding device and mold, increasing production costs. A few molding devices with replaceable molds achieve detachable connections through numerous bolts and fasteners, but this process is cumbersome and hinders the rapid disassembly and replacement of molds. Utility Model Content

[0004] To address the aforementioned technical problems, this disclosure provides a molding apparatus and an intelligent molding production line for foam parts.

[0005] In a first aspect, this disclosure provides a molding apparatus, comprising: The fuselage body includes a base and a drive mechanism, the drive mechanism being disposed on the base; The molding die includes two opposing molds, one of which is driven and connected to the driving mechanism, and the other mold is disposed on the base; The mold parting includes a template, a cavity, and a movable pin. The cavity is slidably connected to the template. A slider is provided on the cavity. The slider includes a first connecting body and a second connecting body arranged at an angle. A sliding groove is provided on the template. The sliding groove includes a first groove and a second groove that are connected to each other. The first connecting body and the second connecting body are slidably connected to the first groove and the second groove respectively. Along the insertion direction of the slider, the width of the first connecting body and the first groove gradually decreases. The movable pin is provided on the template to lock the cavity on the template.

[0006] Therefore, the cavity and template of the molding device are connected by a sliding insertion method. Along the insertion direction of the slider, the width of the first connecting body of the slider and the width of the first groove of the slide gradually decrease to prevent the slider from slipping in the insertion direction. After the slider is inserted into place, the cavity is firmly locked to the template by the movable pin set on the template to prevent the cavity from slipping off the template. Compared with the traditional bolt connection method, this invention can realize the quick replacement between the cavity and the template without the need for a large number of bolt fasteners, which helps to reduce the assembly difficulty, improve the replacement efficiency of the cavity, and speed up the production rhythm of foam parts.

[0007] Optionally, the length of the first connector is smaller than the length of the first groove, and the top surface of the template has a through hole communicating with the first groove. The through hole is located near the insertion end of the slide, and the movable pin is inserted into the through hole and abuts against the first connector.

[0008] Therefore, after the cavity and template are assembled in place, the movable pin can be inserted into the through hole so that the movable pin can abut against one end of the first connecting body in the length direction to lock the cavity and template together.

[0009] Optionally, the top of the first connector is provided with a protrusion, the insertion end of the first groove is connected to a notch for the protrusion to be inserted, the through hole is connected to the notch, the protrusion is configured to push the movable pin upward and abut against the movable pin when the slider is inserted into place.

[0010] Therefore, for the upper mold parting, when the slider is about to be inserted into the position, the protrusion slides into the notch and contacts the movable pin. The movable pin gradually moves upward under the pushing action of the protrusion. When the slider is fully inserted into the position, the protrusion passes over the movable pin. The movable pin falls due to gravity and abuts and locks against the protrusion, thereby achieving the locking of the cavity and the mold plate in the upper position.

[0011] Optionally, the parting line further includes a return spring sleeved on the movable pin, one end of the return spring being connected to the template and the other end being connected to the movable pin.

[0012] Therefore, for the lower mold parting, the return spring is used to provide an insertion force for the movable pin to push the movable pin to move in the direction of insertion through hole, so that the movable pin of the lower mold parting can be reliably inserted into the through hole and abut against the first connecting body.

[0013] Optionally, the protrusion and / or the movable pin are provided with guide ramps.

[0014] This facilitates contact between the protrusion and the movable pin, gradually pushing the movable pin upwards, reducing jamming and improving the smoothness of the pushing process.

[0015] Optionally, the molding device further includes a molding steam pipeline, a molding vacuum pipeline, and a molding three-way control valve. The molding three-way control valve is connected to the molding mold, the molding steam pipeline, and the molding vacuum pipeline. The molding steam pipeline is used to introduce high-temperature steam into the molding mold, and the molding vacuum pipeline is used to evacuate the molding mold.

[0016] This enables the molding device to have a vacuum flash evaporation function, causing a sharp drop in the internal pressure of the molding die after mold closing, and the condensate adhering to the surface of the high-temperature workpiece rapidly vaporizes, carrying away a large amount of latent heat from the workpiece. The molding three-way control valve performs leak-free, high-speed switching between heating and cooling stages to improve the molding efficiency and quality of the foam parts.

[0017] Optionally, it also includes a condensate drain pipe connected to the molding die, the condensate drain pipe being used to drain condensate from the molding die.

[0018] Therefore, the condensate in the molding die is discharged through the condensate drain pipe, achieving effective external drainage of the condensate.

[0019] Optionally, a letter block is detachably provided on the working surface of the cavity, the letter block having an engraved part that protrudes from the working surface of the cavity.

[0020] Thus, markings are formed on the surface of the foam part during molding.

[0021] Optionally, it also includes a molding temperature sensor, which is disposed inside the cavity to detect the temperature inside the cavity; And / or, it also includes a molding pressure sensor disposed within the cavity to detect the degree of material filling within the cavity.

[0022] Therefore, the molding temperature sensor can sensitively, quickly, and accurately sense the actual temperature field within the mold cavity. The molding pressure sensor can monitor the flow pressure of the material during the steam heating stage and whether the cavity is completely filled, thereby improving the molding quality of the foam parts.

[0023] Secondly, this disclosure provides an intelligent foam part molding production line, including a pre-expansion device, a curing device, and the above-mentioned molding device. The pre-expansion device is used to heat the foam particles; the curing device is connected to the pre-expansion device to cure the foam particles; and the molding device is connected to the curing device to process the foam particles into foam parts.

[0024] This intelligent foam molding production line can realize the intelligent manufacturing of foam particles pre-expansion, maturation and molding. Moreover, the molding device of this production line is easy to disassemble and can replace different cavities according to the actual production situation. The replacement process does not require the use of a large number of bolts and fasteners for assembly and fixation, which helps to reduce the assembly difficulty, improve the replacement efficiency of cavities and speed up the production rhythm of foam parts. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0026] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the molding apparatus described in the embodiments of this disclosure. Figure 1 ; Figure 2 This is a schematic diagram of the molding apparatus described in the embodiments of this disclosure. Figure 2 ; Figure 3 for Figure 1 A magnified view of a portion of point A in the middle; Figure 4 This is a schematic diagram of the cavity structure described in the embodiments of this disclosure. Figure 1 ; Figure 5 This is a schematic diagram of the cavity structure described in the embodiments of this disclosure. Figure 2 ; Figure 6 This is a schematic diagram of the structure of the template described in the embodiments of this disclosure; Figure 7 For along Figure 6 A schematic cross-sectional view along the DD direction; Figure 8 This is an assembly diagram of the movable pin, template, and cavity described in an embodiment of this disclosure; Figure 9 For along Figure 2 Cross-sectional view along the BB direction; Figure 10 This is a schematic diagram of the assembly of the T-shaped block and the cavity according to an embodiment of this disclosure; Figure 11 This is an assembly diagram of the molding temperature sensor described in an embodiment of this disclosure; Figure 12 For along Figure 2 A cross-sectional view along the CC direction.

[0028] in: 1. Main body; 11. Base; 12. Drive mechanism; 121. Main cylinder; 13. Forming feed pipe; 131. Forming feed valve; 14. Guide column; 15. Side cylinder; 16. Pneumatic ejection mechanism; 2. Mold parting; 21. Template; 211. Slide groove; 2111. First groove; 2112. Second groove; 2113. Notch; 212. Through hole; 22. Cavity; 221. Slider; 2211. First connector; 2212. Second connector; 2213. Protrusion; 222. T-block; 2221. Engraved part; 23. Movable pin; 3. Molding steam pipeline; 4. Molding vacuum pipeline; 5. Molding three-way control valve; 6. Condensate discharge pipeline; 61. Condensate collection tank; 7. Molding temperature sensor; 8. Molding pressure sensor; 9. Molding controller. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0030] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0031] Refrigerators, as indispensable home appliances in modern households, are large, heavy, and have a delicate internal structure, making them highly susceptible to damage from collisions and drops during storage, loading and unloading, and long-distance transportation. Currently, refrigerator packaging primarily uses corrugated cardboard boxes and expandable polystyrene foam for cushioning protection. Expandable polystyrene foam is a lightweight polymer material with polystyrene resin as its matrix and a large number of closed-cell structures. Due to its excellent cushioning and energy absorption, heat insulation, and ease of processing and molding, it has been widely used in the refrigerator packaging industry.

[0032] Polystyrene foam is typically in granular form. It is produced by molding a large quantity of polystyrene foam granules under high temperature and pressure using a molding device to form sheet-like foam parts. However, most existing molding devices have non-replaceable molds. When producing foam parts of other shapes, it is often necessary to add another molding device and mold, increasing production costs. A few molding devices with replaceable molds achieve detachable connections through numerous bolts and fasteners, but this process is cumbersome and hinders the rapid disassembly and replacement of the molds.

[0033] Therefore, this embodiment provides a molding device. The template 21 of the molding device is provided with a groove 211, and the cavity 22 is correspondingly provided with a slider 221. The cavity 22 and the template 21 are connected by a sliding insertion method. Along the insertion direction of the slider 221, the width of the first connecting body 2211 of the slider 221 and the width of the first groove 2111 of the groove 211 gradually decrease to prevent the slider 221 from slipping out in the insertion direction. After the slider 221 is inserted into place, the cavity 22 is firmly locked to the template 21 by a movable pin 23 provided on the template 21 to prevent the cavity 22 from slipping off the template 21. In this embodiment, the cavity 22 and the template 21 are connected by a sliding insertion method, which facilitates disassembly and replacement. Compared with the traditional bolt connection method, this invention does not require a large number of bolts and fasteners to achieve rapid replacement between the cavity 22 and the template 21, which helps to reduce assembly difficulty, improve the replacement efficiency of the cavity 22, and accelerate the production pace of foam parts.

[0034] Specifically, such as Figure 1 and Figure 2 As shown, the molding device includes a main body 1 and a molding die. The main body 1 includes a base 11 and a drive mechanism 12, with the drive mechanism 12 mounted on the base 11. The molding die includes two opposing molds 2, one of which is driven by the drive mechanism 12, and the other is mounted on the base 11. When the two molds 2 are closed, foam particles can be molded into a foam part with a certain shape.

[0035] In this embodiment, there are two molds 2, which are arranged opposite each other and located at the upper and lower positions respectively. The upper mold 2 is driven and connected to the driving mechanism 12, while the lower mold 2 is fixedly mounted on the base 11. The driving mechanism 12 can drive the upper mold 2 to move up and down to realize the mold closing and mold opening operations.

[0036] Specifically, the mold 2 includes a template 21, a cavity 22, and a movable pin 23, such as... Figures 3 to 7 As shown, the cavity 22 is slidably connected to the template 21. A slider 221 is provided on the cavity 22. The slider 221 includes a first connecting body 2211 and a second connecting body 2212 arranged at an angle. A groove 211 is provided on the template 21. The groove 211 includes a first groove 2111 and a second groove 2112 that are connected. The first connecting body 2211 and the second connecting body 2212 are slidably connected to the first groove 2111 and the second groove 2112 respectively, along the insertion direction of the slider 221 (…). Figures 4 to 6 The X direction shown is the insertion direction of the slider 221. The width of the first connecting body 2211 and the first groove 2111 gradually decreases. The movable pin 23 is pullable and set on the template 21 to fix the cavity 22 on the template 21.

[0037] That is, such as Figure 4 and Figure 5 As shown, in this embodiment, a slider 221 is provided on the top surface of the cavity 22. The slider 221 includes a first connecting body 2211 and a second connecting body 2212. In this embodiment, the first connecting body 2211 and the second connecting body 2212 are vertically connected. The second connecting body 2212 connects the first connecting body 2211 and the cavity 22. The slider 221 in this embodiment has a T-shaped structure, and the width of the first connecting body 2211 gradually decreases along the insertion direction of the slider 221. Similarly, as... Figure 6 and Figure 7 As shown, the template 21 in this embodiment has a groove 211. The groove 211 includes a first groove 2111 and a second groove 2112 that are connected. In this embodiment, the first groove 2111 and the second groove 2112 are also vertically connected. The groove 211 has a T-shaped structure, and the width of the first groove 2111 gradually decreases along the insertion direction of the slider 221. When the cavity 22 is assembled onto the template 21, the T-shaped slider 221 on the cavity 22 is aligned with the T-shaped groove 211 on the template 21. Then, the slider 221 is slid into the groove 211. After the cavity 22 is assembled in place, the pullable movable pin 23 is used to firmly lock the cavity 22 onto the template 21.

[0038] Optionally, the arrangement of the active pin 23 in this embodiment includes, but is not limited to: 1) In some embodiments, a first assembly hole for inserting a movable pin 23 may be provided on the cavity 22, and a second assembly hole for inserting a movable pin 23 may be provided through the template 21. When the cavity 22 and the template 21 are assembled in place, the first assembly hole on the cavity 22 is exactly aligned with the second assembly hole on the template 21. At this time, the movable pin 23 is inserted into the first and second assembly holes to lock the cavity 22 and the template 21. The specific location of the first assembly hole on the cavity 22 and the specific location of the second assembly hole on the template 21 can be designed and selected according to the actual situation. This embodiment does not specifically limit the specific locations of the first and second assembly holes.

[0039] 2) In some embodiments, the length of the first connecting body 2211 can be smaller than the length of the first groove 2111. A through hole 212 communicating with the first groove 2111 is provided on the top surface of the template 21. The through hole 212 is located near the insertion end of the slide groove 211, and the movable pin 23 is inserted into the through hole 212 and abuts against the first connecting body 2211. That is, as shown... Figure 3 and Figure 8 As shown, Figure 8The X direction shown is the insertion direction. In this embodiment, the length of the first connecting body 2211 is smaller than the length of the first groove 2111 (the length is also the dimension along the insertion direction). After the cavity 22 and the template 21 are assembled in place, the movable pin 23 is inserted into the through hole 212. At this time, the movable pin 23 can abut against one end of the first connecting body 2211 in the length direction to lock the cavity 22 and the template 21.

[0040] Based on this, for the parting mold 2 located at the upper position (that is, the parting mold 2 connected to the drive mechanism 12), a protrusion 2213 can be provided on the top of the first connecting body 2211. The insertion end of the first groove 2111 is connected to a notch 2113 for the protrusion 2213 to be inserted. The through hole 212 is connected to the notch 2113. The protrusion 2213 is configured to push the movable pin 23 upward and abut against the movable pin 23 when the slider 221 is inserted into the position.

[0041] That is, such as Figure 8 As shown, in this embodiment, a protrusion 2213 is provided on the top of the first connecting body 2211. When the slider 221 is about to be inserted into the position, the protrusion 2213 slides into the notch 2113 and contacts the movable pin 23. The movable pin 23 gradually moves upward under the pushing action of the protrusion 2213. When the slider 221 is fully inserted into the position, the protrusion 2213 passes over the movable pin 23. The movable pin 23 falls under the influence of gravity, and the movable pin 23 abuts and locks against the protrusion 2213, thereby locking the cavity 22 located in the upper position to the template 21. When the cavity 22 needs to be replaced, simply pull up the movable pin 23 manually to release the contact between the movable pin 23 and the protrusion 2213, and the entire cavity 22 can be pulled off the template 21, achieving quick disassembly.

[0042] Furthermore, for the lower mold part 2 (i.e., the mold part 2 fixedly connected to the base 11), the mold part 2 may also include a return spring (not shown in the figure) sleeved on the movable pin 23. One end of the return spring is connected to the template 21, and the other end is connected to the movable pin 23. The return spring is used to provide an insertion force for the movable pin 23 to push the movable pin 23 to move in the direction of the insertion through hole 212.

[0043] That is, in order to ensure that the movable pin 23 of the lower mold parting 2 can be reliably inserted into the through hole 212 and abut against the first connecting body 2211, in this embodiment, a return spring is fitted around the movable pin 23 of the mold parting 2. One end of the return spring is connected to the outer surface of the template 21, and the other end is connected to the movable pin 23. In the initial state, the movable pin 23 is always inserted into the notch 2113 under the action of the return spring. When the slider 221 is about to be inserted into the notch, the protrusion 2213 slides into the notch 2113 and contacts the movable pin 23. Under the pushing action of the protrusion 2213, the movable pin 23 gradually moves towards the direction of disengaging from the through hole 212. At this time, the return spring is stretched and stores force. When the slider 221 is fully inserted into the notch and the protrusion 2213 has completely passed the movable pin 23, the return spring restores its deformation and drives the movable pin 23 to move along the direction of inserting into the through hole 212, so that the movable pin 23 abuts and locks against the protrusion 2213, thereby realizing the locking of the cavity 22 and the template 21 located in the lower position. Similarly, the same design can be applied to the movable pin 23 of the upper parting 2, but this embodiment will not elaborate further on this.

[0044] Furthermore, in this embodiment, guide ramps are provided on both the protrusion 2213 and the movable pin 23 to facilitate contact between the protrusion 2213 and the movable pin 23, and to gradually push the movable pin 23 upward, reducing jamming and improving the smoothness of the pushing process. Alternatively, guide ramps can be provided only on the protrusion 2213 or only on the movable pin 23, depending on the actual situation; this embodiment does not impose specific limitations on this.

[0045] In some embodiments, the molding apparatus further includes a molding steam pipeline 3, a molding vacuum pipeline 4, and a molding three-way control valve 5. The molding three-way control valve 5 is connected to the molding mold, the molding steam pipeline 3, and the molding vacuum pipeline 4. The molding steam pipeline 3 is used to introduce high-temperature steam into the molding mold, and the molding vacuum pipeline 4 is used to evacuate the molding mold.

[0046] The molding steam line 3 and molding vacuum line 4 are connected to the molding mold via a molding three-way control valve 5 to introduce high-temperature steam or create a vacuum inside the molding mold. Specifically, the cavity 22 is provided with through holes that connect to the molding steam line 3 and molding vacuum line 4. When the molding mold is closed, the molding steam line 3 and molding vacuum line 4 can introduce high-temperature steam or create a vacuum inside the closed molding mold. The molding vacuum line 4 extends outward and connects to a molding vacuum box located on the lower side. The molding vacuum box has a large-volume pumping capacity. When flash cooling is activated, the closed molding mold is connected to the molding vacuum box, causing a sudden drop in internal pressure. The condensate adhering to the surface of the high-temperature workpiece rapidly vaporizes, carrying away a large amount of latent heat from the workpiece. The molding three-way control valve 5 is controlled by the molding controller 9, allowing for leak-free, high-speed switching between heating and cooling stages to improve the molding efficiency and quality of the foam parts.

[0047] Furthermore, the molding apparatus may also include a condensate drain pipe 6 connected to the molding mold, which is used to drain the condensate inside the molding mold. That is, in order to ensure that the inside of the mold is dry, this embodiment has a condensate hole at the bottom of the cavity 22, and the condensate drain pipe 6 guides the condensate inside the cavity 22 to the condensate collection tank 61 at the bottom through the condensate hole, so as to achieve effective drainage of the condensate.

[0048] Optionally, such as Figure 9 As shown, the main body 1 of this embodiment has a vertical frame structure. The drive mechanism 12 includes a main cylinder 121 vertically mounted at the top of the base 11. The main cylinder 121 provides the core lifting thrust for mold closing and demolding. The pneumatic shaft below the main cylinder 121 is driven and connected to the template 21. In order to accurately feedback the physical stroke of the main cylinder 121, limit sensors are set around the pneumatic shaft. The limit sensors can identify the downward pressure limit (mold closing position) and upward limit (maximum return stroke position of demolding) of the main cylinder 121 and feed back the position electrical signal to the molding controller 9 in real time. The molding controller 9 is specifically a control cabinet, which includes a PLC logic control module, a human-machine interface and various electrical drive modules. It is the "central brain" of the entire equipment's automated operation.

[0049] In addition, such as Figure 9 As shown, the main body 1 of this embodiment also includes a molding feed pipe 13 that vertically penetrates the main cylinder 121. The molding feed pipe 13 passes through the main cylinder 121 and the cavity 22 located above it to achieve automated feeding of the molding mold. A molding feed valve 131 is connected in series to the exposed section at the upper end of the molding feed pipe 13 to control the feeding of materials.

[0050] Optionally, such as Figure 1 and Figure 9 As shown, around the molding die, the main body 1 also includes four guide pillars 14 to provide precise longitudinal guidance for the lifting and lowering movement of the drive mechanism 12, ensuring no misalignment occurs during mold closing. Furthermore, on the left and right sides of the molding die, the main body 1 also includes diagonally symmetrically arranged side cylinders 15. These side cylinders 15 assist the main cylinder 121, providing higher locking rigidity at the end of mold closing and a smooth auxiliary pulling force at the beginning of demolding.

[0051] In some embodiments, a letter block 222 is detachably disposed on the working surface of the cavity 22. The letter block 222 has an engraved portion 2221 that protrudes from the working surface of the cavity 22. For example, as shown... Figure 10As shown, the working surface of the cavity 22 has a groove for mounting the T-block 222, and the bottom of the groove has a threaded hole. The T-block 222 has a through hole corresponding to the threaded hole, and a bolt is screwed into the threaded hole through the through hole to detachably fix the T-block 222 to the groove of the working surface of the cavity 22. The engraved part 2221 of the T-block 222 protrudes from the working surface of the cavity 22 to form a mark on its surface during foam molding.

[0052] In some embodiments, to ensure molding quality, a molding temperature sensor 7 and a molding pressure sensor 8 may also be provided inside the cavity 22. Specifically, as shown... Figure 11 As shown, in this embodiment, four oblique holes are symmetrically machined on the back of the cavity 22. The molding temperature sensor 7 passes through the back of the cavity 22 and the template 21 and is directly inserted into the oblique holes. The sensing head of the molding temperature sensor 7 is only 0.5mm away from the molding surface of the cavity 22, ensuring that it can sensitively, quickly and accurately sense the real temperature field inside the cavity. Figure 12 As shown, the molding pressure sensor 8 is located in the most difficult-to-fill material dead zone area within the cavity 22, used to monitor the flow pressure of the material during the steam heating stage and whether the cavity is completely filled. Alternatively, in other embodiments, either the molding temperature sensor 7 or the molding pressure sensor 8 can be installed separately, depending on the specific design requirements.

[0053] In some embodiments, the fuselage body 1 may further include a pneumatic ejection mechanism 16, such as Figure 9 As shown, the pneumatic ejection mechanism 16 may include an ejector rod, an ejection cylinder that drives the ejector rod to move up and down, and an ejection limit sensor associated with it. In this embodiment, an independent ejection limit sensor is specifically configured on the outer fixed side wall of the ejection cylinder or ejector rod. During each demolding, the molding controller 9 controls the ejector rod of the pneumatic ejection mechanism 16 to eject the workpiece upward. When the ejection limit sensor detects that the ejector rod has moved to the highest safe stroke point, it immediately sends a signal to the molding controller 9 to stop the ejection action, preventing the ejector rod from overextending and impacting the cavity 22, causing equipment damage or workpiece scrap. During the return stroke, the ejection limit sensor is also used to locate the lowest origin.

[0054] In some embodiments, the molding apparatus may also be equipped with a pressure box that provides a high-pressure clean air source for cleaning nozzles for automated cleaning of the cavity after demolding.

[0055] The specific operation flow of the molding device in this embodiment is as follows: 1) Feeding and mold closing stage: The molding controller 9 issues a command to open the molding feed valve 131, and the material is injected into the molding mold through the molding feed pipe 13. After the precisely calculated preset feeding time is reached, the molding feed valve 131 is automatically closed. Then, the molding controller 9 drives the main cylinder 121 and the side cylinder 15 to advance downwards simultaneously, achieving smooth mold closing under the guidance of the guide column 14. When the limit sensor detects that the pneumatic shaft of the main cylinder 121 has moved to the mold closing position, the advancement is paused and the mold is locked.

[0056] 2) Steam heating filling stage: After locking, the molding controller 9 controls the molding three-way control valve 5 to switch to the molding steam pipeline 3, allowing high-temperature steam to enter the mold cavity 22. The molding temperature sensor 7 monitors the internal temperature of the mold cavity 22 in real time, and the molding pressure sensor 8 monitors the material filling degree in dead corners. The system automatically controls the heating time through a built-in PID algorithm until the reading of the molding pressure sensor 8 stabilizes within the preset range, determining that the material is completely filled and compacted.

[0057] 3) Vacuum flash cooling stage: Once the filling degree reaches the standard, the three-way control valve 5 is immediately activated to quickly switch to the molding vacuum pipeline 4, connecting the internal environment of the mold cavity with the molding vacuum chamber. The pressure inside the mold cavity drops sharply to a negative pressure state. The condensate remaining in the mold cavity 22 and on the surface of the workpiece undergoes violent vaporization (flash evaporation) instantly, absorbing a large amount of the latent heat of vaporization of the molded workpiece, causing the workpiece to cool down and solidify rapidly in a very short time. The exhaust gas generated after the condensate vaporization is drawn into the molding vacuum chamber under negative pressure.

[0058] 4) Demolding, ejection, and automatic cleaning stage: After flash cooling, the molding controller 9 drives the main cylinder 121 and side cylinder 15 back to their original positions. When the limit sensor detects that the mold plate 21 has returned to its highest position (mold opening origin), the system triggers the pneumatic ejection mechanism 16. The pneumatic ejection mechanism 16 starts, pushing the ejector rod upward to push the molded foam part out of the cavity 22. At the same time, the ejection limit sensor around the ejector rod monitors the ejection stroke in real time. When the ejection is in place, the ejection stops, and then the cleaning nozzle is opened, and high-pressure gas is supplied by the pressure box to blow and clean the upper and lower cavities 22 to remove any residual debris and water droplets, preparing for the next cycle. At the same time, the condensate drain pipe 6 discharges the condensate drained during the cycle to the condensate collection tank 61 to complete the water-air separation. If abnormal mold jamming occurs during this process, causing excessive ejection resistance, the molding controller 9 will immediately alarm and stop the machine to prevent damage to mechanical parts.

[0059] Furthermore, this embodiment also provides an intelligent foam part molding production line, including a pre-expansion device, a curing device, and the aforementioned molding device. The pre-expansion device is used to heat the foam particles; the curing device is connected to the pre-expansion device to cure the foam particles; and the molding device is connected to the curing device to process the foam particles into foam parts. Thus, intelligent molding manufacturing of foam parts is achieved, realizing the intelligent manufacturing of foam particles through pre-expansion, curing, and molding. Moreover, the cavity 22 of the molding device in this production line is easily disassembled, allowing for the replacement of different cavities 22 according to actual production conditions. The replacement process does not require the use of numerous bolts and fasteners for assembly and fixation, which helps reduce assembly difficulty, improves the replacement efficiency of the cavity 22, and accelerates the production pace of foam parts. The pre-expansion device and curing device in this embodiment can be specifically referred to in the prior art, and will not be described in detail here.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0061] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A molding apparatus, characterized in that, include: The fuselage body (1) includes a base (11) and a drive mechanism (12), the drive mechanism (12) being disposed on the base (11); The molding die includes two opposing molds (2), one of which is drivenly connected to the driving mechanism (12), and the other mold (2) is disposed on the base (11); The mold parting (2) includes a template (21), a cavity (22), and a movable pin (23). The cavity (22) is slidably connected to the template (21). A slider (221) is provided on the cavity (22). The slider (221) includes a first connecting body (2211) and a second connecting body (2212) arranged at an angle. A groove (211) is provided on the template (21). The groove (211) includes a first groove (2111) and a second groove that are connected together. (2112), the first connecting body (2211) and the second connecting body (2212) are slidably connected to the first groove (2111) and the second groove (2112) respectively. Along the insertion direction of the slider (221), the width of the first connecting body (2211) and the first groove (2111) gradually decreases. The movable pin (23) is set on the template (21) to lock the cavity (22) on the template (21).

2. The molding apparatus according to claim 1, characterized in that, The length of the first connector (2211) is smaller than the length of the first groove (2111). The top surface of the template (21) is provided with a through hole (212) that communicates with the first groove (2111). The through hole (212) is located near the insertion end of the slide (211). The movable pin (23) is inserted into the through hole (212) and abuts against the first connector (2211).

3. The molding apparatus according to claim 2, characterized in that, The top of the first connector (2211) is provided with a protrusion (2213), and the insertion end of the first groove (2111) is connected to a notch (2113) for the protrusion (2213) to be inserted. The through hole (212) is connected to the notch (2113). The protrusion (2213) is configured to push the movable pin (23) upward and abut against the movable pin (23) when the slider (221) is inserted into place.

4. The molding apparatus according to claim 3, characterized in that, The mold parting (2) also includes a return spring sleeved on the movable pin (23), one end of the return spring is connected to the template (21), and the other end is connected to the movable pin (23).

5. The molding apparatus according to claim 3, characterized in that, The protrusion (2213) and / or the movable pin (23) are provided with guide slopes.

6. The molding apparatus according to claim 3, characterized in that, The molding device also includes a molding steam pipeline (3), a molding vacuum pipeline (4), and a molding three-way control valve (5). The molding three-way control valve (5) is connected to the molding mold, the molding steam pipeline (3), and the molding vacuum pipeline (4). The molding steam pipeline (3) is used to introduce high-temperature steam into the molding mold, and the molding vacuum pipeline (4) is used to evacuate the molding mold.

7. The molding apparatus according to claim 6, characterized in that, It also includes a condensate drain pipe (6) connected to the molding die, the condensate drain pipe (6) being used to drain the condensate inside the molding die.

8. The molding apparatus according to any one of claims 1-7, characterized in that, A letter block (222) is detachably provided on the working surface of the cavity (22). The letter block (222) has an engraved part (2221) that protrudes from the working surface of the cavity (22).

9. The molding apparatus according to any one of claims 1-7, characterized in that, It also includes a molding temperature sensor (7), which is disposed in the cavity (22) for detecting the temperature in the cavity (22); And / or, it also includes a molding pressure sensor (8) disposed in the cavity (22) for detecting the degree of material filling in the cavity (22).

10. A smart molding production line for foam parts, characterized in that, The device includes a pre-expansion device, a curing device, and a molding device as described in any one of claims 1-9, wherein the pre-expansion device is used to heat the foam particles; the curing device is connected to the pre-expansion device to cure the foam particles; and the molding device is connected to the curing device to process the foam particles into foam parts.

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