Quick mold moving and replacing mechanism for foam forming machine

Abstract

The utility model relates to a quick mould changing mechanism for mould moving of a foam forming machine, which comprises a mould moving assembly, the mould moving assembly comprises a mould moving seat and a mould mounting frame for mounting a mould assembly, the mould mounting frame is connected with the mould moving seat through a detachable structure, and the detachable structure comprises a plurality of lock hooks and mounting grooves which are correspondingly arranged on the mould mounting frame and the mould moving seat. The lock hooks penetrate into the mounting grooves to connect the mold mounting frame and the mold moving seat, the interiors of the mold mounting frame and the mold moving seat are both of hollow structures, the mold mounting frame and the mold moving seat are both provided with air inlet pipes, water inlet pipes and water outlet pipes which are correspondingly arranged, molds and pipelines are integrated through the modular mold mounting frame, and the mold changing process of integral hoisting and one-key locking is achieved.

Description

Technical Field

[0001] This utility model relates to the field of foam molding machines, and in particular to a quick mold changing mechanism for foam molding machines. Background Technology

[0002] A foam molding machine is an industrial device used to process foam raw materials into foam products of specific shapes. Its core principle is to use processes such as heating, pressurizing, and cooling to make the foam particles expand and fill the mold cavity, and finally solidify to form a lightweight, porous foam product.

[0003] Existing foam molding machines suffer from significant problems in mold replacement and adaptability. Mold replacement is performed directly on the machine, requiring the disassembly of interfaces such as the material gun, steam pipes, cooling water pipes, and drainage pipes. This process is time-consuming, labor-intensive, and inefficient, with a single mold change taking several hours. Furthermore, current foam molding machines primarily use two sets of molds, differing only in their base film length. Existing equipment relies on fixed pipe interfaces, limiting height adjustment and requiring customized components for different mold specifications. This increases costs and inventory pressure, restricts equipment versatility, and necessitates manual alignment and trial adjustments after mold installation, leading to frequent mechanical wear. With the increasing demand for flexibility and intelligence in the manufacturing industry, there is a pressing need for a technological solution that enables rapid mold replacement, dynamic adaptation to multiple mold specifications, and reduced manual intervention. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a quick mold changing mechanism for a foam molding machine, which addresses the shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick mold changing mechanism for a foam molding machine, comprising a mold changing assembly, the mold changing assembly including a mold changing base and a mold mounting frame for mounting the mold assembly, the mold mounting frame being connected to the mold changing base via a detachable structure, the detachable structure including a plurality of locking hooks and mounting grooves correspondingly disposed on the mold mounting frame and the mold changing base, the locking hooks being inserted into the mounting grooves to connect the mold mounting frame and the mold changing base, both the mold mounting frame and the mold changing base having hollow interiors, and both the mold mounting frame and the mold changing base being provided with corresponding air inlet pipes, water inlet pipes and drain pipes.

[0006] The above technical solution enables rapid connection and separation through a detachable structure between the mold mounting frame and the mold moving base. The locking hooks and mounting slots can be interchangeably installed on both the mold mounting frame and the mold moving base. After the locking hooks are inserted into the mounting slots, they are fixed by mechanical interlocking, eliminating the need for cumbersome bolts or manual tightening. The hollow structure of the mold mounting frame and the mold moving base reduces overall weight and provides space for pipe layout. The corresponding air inlet pipes, water inlet pipes, and drain pipes are directly aligned through pre-set holes. The pipe interfaces are automatically connected during mold mounting frame installation, eliminating the need for manual adjustment of each connection, allowing workers to... After the external mold is assembled, it is directly mounted onto the mold transfer base of the foam molding machine, which solves the problem of low efficiency caused by the need to disassemble multiple sets of pipelines and narrow operating space during the traditional mold change process. The rigid fit between the locking hook and the mounting groove ensures the stability of the mold assembly during high-pressure steam injection and cooling, avoiding loosening of the connection due to vibration or pressure fluctuation. At the same time, the hollow structure makes it easy to directly observe the pipeline status and quickly locate the fault point during maintenance, reducing downtime for maintenance. This design integrates the mold and pipeline through a modular mold mounting frame, realizing the overall hoisting and one-click locking mold change process.

[0007] The aforementioned quick mold changing mechanism for a foam molding machine can be further configured such that: at least one mounting groove is provided on each of the left and right sides of the mold moving base, and locking hooks corresponding to the mounting grooves are provided on the left and right sides of the mold mounting frame, with the hook groove of the locking hook located on the lower surface of the locking hook.

[0008] By adopting the above technical solution, at least one mounting slot is symmetrically set on the left and right sides of the mold transfer base, and a matching locking hook is set at the corresponding position of the mold mounting frame. The hook groove of the locking hook is located on its lower surface. The mechanical insertion and the gravity of the mold mounting frame itself are used to achieve quick alignment and locking. The precise matching design of the mounting slot and the locking hook allows the hook groove on the lower surface of the locking hook to automatically slide into the mounting slot by its own weight or slight external force when the mold mounting frame is hoisted to the mold transfer base. There is no need to manually adjust the horizontal or vertical position, which solves the problem of alignment difficulty caused by narrow operating space in the traditional mold changing process. The symmetrically distributed mounting slots and locking hooks on the left and right sides ensure that the mold mounting frame and the mold transfer base are subjected to balanced forces, avoiding the skewing or stress concentration caused by unilateral locking, and improving the stability of the mold in high-pressure steam injection and cooling cycle. The design of the hook groove being located on the lower surface of the locking hook allows the locking hook to naturally form a self-locking structure after being inserted into the mounting slot. It can resist vertical vibration and impact without additional fixing devices. It directly addresses the core defects of the background technology, such as cumbersome mold installation and easy loosening, significantly simplifying the operation process and enhancing the reliability of the connection.

[0009] The aforementioned quick mold changing mechanism for a foam molding machine can be further configured such that: the mold changing base is provided with an installation pin at the corresponding mounting groove, and the hook groove includes a groove for accommodating the installation pin and a guide slope provided on at least one side of the groove to guide the installation pin into the groove.

[0010] Using the above technical solution, when the mold mounting frame is hoisted to the mold shifting base, the guide slope on the lower surface of the locking hook contacts the mounting pin. The guide slope causes the mounting pin to slide into the groove along a predetermined path, achieving self-alignment without manual intervention. The groove's accommodation of the mounting pin restricts horizontal displacement, preventing the mold mounting frame from shifting or shaking during locking. The inclination angle of the guide slope matches the diameter of the mounting pin, ensuring minimal friction during sliding and avoiding jamming or wear. This structure directly addresses the problems of difficult manual alignment and time-consuming installation in existing technologies. Through the integrated design of mechanical guidance and limiting, it significantly improves the connection efficiency and positioning accuracy between the mold mounting frame and the mold shifting base. At the same time, the rigid fit between the mounting pin and the groove enhances the locking hook's impact resistance under high-pressure steam injection and vibration environments, avoiding the risk of thread wear or loosening caused by repeated disassembly in traditional bolt fastening methods.

[0011] The aforementioned quick mold changing mechanism for a foam molding machine can be further configured such that: a locking hole is provided above the mounting pin corresponding to the mold mounting frame, a locking pin can be inserted into the locking hole, and a locking hook is inserted into the mounting groove, and the locking hook is locked in the mounting groove by the mounting pin and the locking pin.

[0012] By adopting the above technical solution, a double locking mechanism is formed by setting a locking hole above the corresponding mounting pin of the mold frame and inserting a locking pin in the locking hole. When the locking hook is inserted into the mounting groove, the mounting pin is accommodated in the groove of the hook groove to limit horizontal displacement. Then, the locking pin is inserted vertically through the gap between the locking hole and the mounting pin, directly preventing the locking hook from disengaging from the mounting groove in the vertical direction. The insertion path of the locking pin is orthogonal to the axis of the mounting pin, ensuring that the locking force is evenly applied to the contact surface between the locking hook and the mounting groove, eliminating the risk of loosening caused by mold assembly vibration or high-pressure steam impact. Preferably, the end of the locking pin is provided with an anti-disengagement buckle or threaded fixing structure to prevent accidental disengagement.

[0013] The aforementioned quick mold changing mechanism for a foam molding machine can be further configured as follows: the mold mounting frame comprises a vertical plate and a side plate, the middle of the mold mounting frame is provided with several baffle plates, the upper end of the mold mounting frame is provided with a mold mounting frame hanger, and the drain pipe is provided at the lower end of the mold mounting frame and the mold moving base.

[0014] By adopting the above technical solution, the mold mounting frame is designed as a frame structure consisting of two upper and lower upright plates and two left and right side plates, with several retaining templates in the middle, forming a modular and lightweight support system. The upper and lower upright plates and the left and right side plates are connected by welding or bolts to form a rigid main body. The retaining templates in the middle are distributed laterally to separate the mold components and the pipeline layout space to avoid interference. The lifting parts at the top of the mold mounting frame cooperate with the lifting equipment to achieve overall lifting, eliminating the need for manual handling. Drainage pipes are centrally installed at the bottom of the mold mounting frame and the mold moving base, and cooling water is quickly discharged using the principle of gravity flow. At the same time, the low-level layout of the pipeline facilitates direct observation and cleaning during maintenance. This structure reduces the processing difficulty through the design of split upright plates and side plates, optimizes the adjustability of the fixed position of the mold components through the spacing of the retaining templates, and the standardized interface of the lifting parts is compatible with cranes of different tonnages. It directly addresses the maintenance difficulties caused by narrow mold installation space and chaotic pipeline layout in the background technology, and improves the structural strength and operation convenience of the mold mounting frame with a modular, lightweight, and clearly functional design.

[0015] The aforementioned quick mold changing mechanism for a foam molding machine can be further configured such that: both the mold mounting frame and the mold moving base are provided with mold adjustment plates; the air inlet pipe and the water inlet pipe are respectively provided on the mold adjustment plates of the mold mounting frame and the mold moving base; and both the mold mounting frame and the mold moving base are provided with lifting adjustment mechanisms that can drive the mold adjustment plates to rise and fall axially.

[0016] By adopting the above technical solution, mold adjustment plates are set on the mold mounting frame and the mold moving base, and the air inlet pipe and water inlet pipe are integrated into the mold adjustment plates respectively, so as to realize the linkage adjustment of the pipeline and the mold assembly. The mold adjustment plate moves vertically along the axis through the lifting adjustment mechanism, directly driving the air inlet pipe and water inlet pipe to rise and fall synchronously, so that the pipeline interface is always aligned with the corresponding interface of the mold assembly. The lifting adjustment mechanism adopts screw drive or hydraulic drive, and controls the displacement accuracy of the mold adjustment plate through precision screw or piston rod, ensuring the sealing of the interface during the high-pressure steam, air and cooling water transportation. The independent adjustment design of the mold adjustment plates of the mold mounting frame and the mold moving base allows for adaptation to the difference in upper and lower mold heights of the mold assembly. The mold adjustment plate surface is set with positioning slots that engage with the flanges of the mold assembly to limit the horizontal displacement stroke and prevent excessive displacement. Through mechanical linkage and precise control, the pain point of traditional equipment requiring repeated disassembly of pipelines and manual calibration for mold height changes is directly solved, significantly shortening the mold change and debugging time and improving the equipment's adaptability to molds of different specifications.

[0017] The aforementioned quick mold changing mechanism for a foam molding machine can be further configured such that: the lifting and adjusting mechanism includes at least one screw jack mounted on the mold mounting frame or mold moving base, the output end of the screw jack being connected to the corresponding mold adjusting plate, and the screw jack driving the mold adjusting plate axially closer to or further away from the drain pipe.

[0018] Using the above technical solution, at least one screw jack is installed on the mold mounting frame or mold moving base as the core drive component of the lifting and adjusting mechanism. The output end of the screw jack is directly connected to the corresponding mold adjusting plate through a rigid coupling or flange. The precision thread transmission of the screw converts the rotational motion into the axial linear displacement of the mold adjusting plate, driving the mold adjusting plate to move precisely up and down in the vertical direction. The axial movement of the mold adjusting plate towards or away from the drain pipe is achieved by the forward and reverse rotation of the screw jack. For example, rotating the screw clockwise moves the mold adjusting plate up to increase the distance between the air inlet pipe and the drain pipe, while rotating counterclockwise moves it down to shorten the distance. The base is fixed to the support of the mold mounting frame or the mold moving base by high-strength bolts. The lifting trajectory of the mold adjustment plate is preferably constrained by the linear guide rail or guide groove on the side wall of the mold mounting frame or the mold moving base to ensure that there is no horizontal deviation during the movement process. This ensures that the air inlet pipe, water inlet pipe and mold component interface are always coaxially aligned. This structure directly solves the problem of traditional equipment requiring repeated manual adjustment of pipe interface positions due to differences in mold height and leakage caused by misalignment through mechanical transmission. Rigid transmission and high-precision control enable rapid adjustment to adapt to different mold sizes, while avoiding positioning drift caused by pressure fluctuations in hydraulic or pneumatic systems, significantly improving system stability and sealing reliability.

[0019] The aforementioned quick mold changing mechanism for a foam molding machine can be further configured as follows: the mold mounting frame and the mold shifting base are each provided with a plurality of corresponding material receiving pipes and material conveying pipes at their upper ends; the mold mounting frame is provided with a mold assembly bolted to the mold mounting frame; the mold assembly is provided with a plurality of material guns for feeding material to the mold assembly; one end of each material gun passes through the mold mounting frame and the mold shifting base; the mold shifting base is provided with a material cylinder and a material distributor connected to the material cylinder; and the material receiving pipe is used to connect to the material gun and feed it material.

[0020] By adopting the above technical solution, corresponding material receiving pipes and material conveying pipes are set on the upper end of the mold mounting frame and the mold moving base. The mold assembly is fixedly installed on the mold mounting frame with bolts. Multiple material guns are integrated on the mold assembly. One end of the material gun passes through the mold mounting frame and the mold moving base and is connected to the material cylinder and material distributor on the mold moving base, realizing precise supply and automated docking of raw materials. The material receiving pipe of the mold mounting frame and the material conveying pipe of the mold moving base are directly aligned through preset positions. After the material gun passes through the reserved holes of the mold mounting frame and the mold moving base, its end is automatically connected to the material receiving pipe through the sealing flange face. The material distributor distributes the foaming raw material in the material cylinder to each material gun according to the set parameters, and then conveys it to the mold cavity through the material conveying pipe. The whole process does not require manual intervention to connect the pipeline one by one. The hollow structure of the mold moving base and the mold mounting frame provides sufficient layout space for the material guns and pipelines, avoiding installation interference or maintenance difficulties caused by narrow space, significantly shortening the mold change and debugging cycle and improving the sealing and reliability of the material supply system.

[0021] The aforementioned quick mold changing mechanism for a foam molding machine can be further configured such that: the surfaces of the material conveying pipe, air inlet pipe, water inlet pipe, and drain pipe are all provided with sealing ring mounting grooves, and sealing rings are provided in the sealing ring mounting grooves; and the mold assembly is provided with air inlet pipe, water inlet pipe, and drain pipe that are correspondingly connected to the mold mounting frame.

[0022] By adopting the above technical solution, sealing ring mounting grooves are set on the surfaces of material conveying pipes, air inlet pipes, water inlet pipes, and drain pipes, and sealing rings are installed in the grooves. Simultaneously, air inlet pipes, water inlet pipes, and drain pipes corresponding to the mold mounting frame are opened on the mold assembly, achieving standardized and automated sealing of the pipe interfaces. When the mold mounting frame and the mold moving base are connected, the pipe interfaces of the mold assembly and the corresponding pipes of the mold mounting frame are automatically aligned through preset positions. The geometric dimensions of the sealing ring mounting grooves precisely match the outer diameter of the sealing rings, ensuring that the sealing rings uniformly fill the interface gaps under pressure, ensuring no leakage during the transportation of high-pressure steam, air, and cooling water. The sealing rings are made of high-temperature resistant fluororubber, and their cross-sectional shape (…) (e.g., O-shaped or rectangular) and the trapezoidal or rectangular groove structure of the mounting slot are adapted to generate radial elastic deformation under pressure to compensate for manufacturing tolerances and assembly errors. The air inlet, water inlet and drain ports of the mold assembly are provided with chamfers or guide flanges to guide the sealing ring to be accurately embedded in the groove when plugged into the pipe interface of the mold frame, avoiding misalignment or compression damage. This design directly addresses the inefficiency and leakage risk caused by manual pipe connection and reliance on operational experience in the background technology. It achieves plug-and-play through standardized interfaces and pre-installed sealing rings, significantly simplifying the pipe connection steps, improving sealing reliability, and reducing the wear of sealing rings caused by repeated disassembly, thus extending service life.

[0023] The aforementioned quick mold changing mechanism for a foam molding machine can be further configured as follows: an air supply pipe and a water supply pipe are provided above the mold moving base, and a drainage pipe is provided below it. The air supply pipe is connected to the air inlet pipe, the water supply pipe is connected to the water inlet pipe, and the drainage pipe is connected to the drainage pipe.

[0024] By adopting the above technical solution, a highly integrated piping system is formed by centrally setting the air supply main and water supply main above the mold moving base and the drainage main below, and connecting them to the air inlet pipe, water inlet pipe, and drainage pipe of the mold mounting frame and mold assembly. This ensures that the entire material supply, air supply, water supply, and drainage structure moves with the mold moving base. The air supply main connects to the air inlet pipe of the mold mounting frame via branch pipes, directly supplying high-pressure steam and air to the mold assembly; the water supply main connects to the water inlet pipe of the mold mounting frame via parallel pipes, providing circulating water for mold cooling; and the drainage main connects to the mold mounting frame via vertically arranged water collection pipes. The drainage pipes are connected to allow for rapid drainage of cooling wastewater by gravity, preventing mold corrosion or pipe blockage caused by liquid accumulation. The interfaces between the main and branch pipes are connected via flanges or plugs, with fluororubber sealing rings in the mounting grooves providing high-pressure sealing to prevent media leakage. The main air and water supply pipes above the mold transfer base are fixed with rigid supports to reduce the impact of vibration on pipe connections. The inclined design of the lower drainage pipe further optimizes drainage efficiency. When replacing mold components, there is no need to disassemble and reinstall each pipe individually, greatly improving mold changing efficiency and increasing production efficiency.

[0025] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0027] Figure 2 This is a front view of an embodiment of the present utility model.

[0028] Figure 3 for Figure 2 A sectional view along line AA.

[0029] Figure 4 This is a rear view of an embodiment of the present utility model.

[0030] Figure 5 for Figure 4 BB-direction sectional view.

[0031] Figure 6 Explosion of this utility model embodiment Figure 1 .

[0032] Figure 7 Explosion of this utility model embodiment Figure 2 .

[0033] Figure 8 Explosion of this utility model embodiment Figure 3 .

[0034] Figure 9 This is a three-dimensional schematic diagram of the mold frame according to an embodiment of the present utility model.

[0035] Figure 10 This is a three-dimensional schematic diagram of the mold transfer base according to an embodiment of the present utility model. Figure 1 .

[0036] Figure 11 This is a three-dimensional schematic diagram of the mold transfer base according to an embodiment of the present utility model. Figure 2 .

[0037] Figure 12 The effect of this embodiment of the invention when installed on a foam molding machine Figure 1 .

[0038] Figure 13 The effect of this embodiment of the invention when installed on a foam molding machine Figure 2 . Detailed Implementation

[0039] like Figures 1-13 As shown, a quick mold changing mechanism for a foam molding machine includes a mold changing assembly. The mold changing assembly includes a mold changing base 1, a mold assembly 3, and a mold mounting frame 2 for mounting the mold assembly 3. The mold assembly 3 includes a mold base plate and multiple molds mounted on the mold base plate. The mold assembly 3 is mounted on the mold mounting frame 2 by bolts on the mold base plate. The mold mounting frame 2 is connected to the mold changing base 1 by a detachable structure. The detachable structure includes two locking hooks 21 on each side of the mold mounting frame 2 and two mounting slots 11 on the mold changing base 1. The mold changing base 1 is provided with mounting pins 111 at the corresponding mounting slots 11. The lower surface of hook 21 is provided with a concave hook groove, which includes a groove 211 for accommodating mounting pin 111 and guide slopes 212 on both sides of the groove 211 to guide the mounting pin 111 into the groove 211. The mold mounting frame 2 is provided with a locking hole 112 above the mounting pin 111. A locking pin (not assembled in the figure) can be inserted into the locking hole 112. One end of the locking hook 21 is connected to the mold mounting frame 2, and the other end passes through the mounting groove 11, so that the groove 211 is set on the mounting pin 111. The upper part of the locking hook 21 is locked by the locking pin to prevent the mold mounting frame 2 from moving upward and detaching, thus completing the rapid assembly.

[0040] like Figures 1-11As shown, both the mold mounting frame 2 and the mold transfer base 1 are hollow structures. The mold transfer base 1 is equipped with a material cylinder 4 and a material distributor 41 connected to the material cylinder 4. The upper part of the mold transfer base 1 is equipped with an air supply pipe 5 and a water supply pipe 6, and the lower part is equipped with a drainage pipe 7. The upper ends of both the mold mounting frame 2 and the mold transfer base 1 are equipped with several corresponding material receiving pipes 22 and material conveying pipes 12. Multiple molds in the mold assembly 3 are equipped with material guns 31 that supply material to the mold assembly 3. One end of the material gun 31 is connected to the mold, and the other end passes through the mold mounting frame 2 and the mold transfer base 1. The opening is connected to the material receiving pipe 22 through a flexible hose, so that the material in the material cylinder 4 is quantitatively supplied through the material distributor 41, and then fed into the material gun 31 along the material conveying pipe 12 and the material receiving pipe 22. The mold mounting frame 2, the mold transfer base 1, and the mold assembly 3 are all equipped with corresponding air inlet pipes. 51. The surfaces of the water inlet pipe 61 and the drain pipe 71, the material conveying pipe 12, the air inlet pipe 51, the water inlet pipe 61, and the drain pipe 71 are all provided with sealing ring mounting grooves 50, and sealing rings 501 are provided in the sealing ring mounting grooves 50. The air conveying main pipe 5 is connected to the air inlet pipe 51, the water conveying main pipe 6 is connected to the water inlet pipe 61, and the drain pipe 7 is connected to the drain pipe 71. This allows steam and air to enter the mold through the air conveying main pipe 5 and the air inlet pipe 51, and cooling water to enter the mold through the water conveying main pipe 6 and the water inlet pipe 61. The cooling water in the mold is then discharged through the drain pipe 71 and the drain pipe 7. The material conveying pipe 12, the air inlet pipe 51, the water inlet pipe 61, and the drain pipe 71 are all joined by sealing rings, avoiding cumbersome installation and greatly improving installation efficiency.

[0041] like Figure 9 As shown, the mold mounting frame 2 consists of an upright plate 23 and a side plate 24. The upright plate 23 is divided into upper and lower sections, and the side plate 24 is divided into left and right sections. Several baffle plates 25 are provided in the middle of the mold mounting frame 24. A mold mounting frame hanger 26 is provided at the upper end of the mold mounting frame 2. Mold adjustment plates 8 are provided on both the mold mounting frame 2 and the mold moving base 1. Two air inlet pipes 51 and water inlet pipes 61 are respectively provided on the mold adjustment plates 8 of the mold mounting frame 2 and the mold moving base 1. Both the mold mounting frame 2 and the mold moving base 1 are provided with a lifting adjustment mechanism that can drive the mold adjustment plate 8 to move axially up and down. The lifting adjustment mechanism includes a screw jack 9 provided at both ends of the mold mounting frame 2 and a screw jack 9 provided on the mold moving base 1. The output end of the screw jack 9 is connected to the corresponding mold adjustment plate 71, and the screw jack 9 drives the mold adjustment plate 8 to move axially closer to or away from the drain pipe 71. At the same time, both the mold mounting frame 2 and the mold moving base 1 are provided with a limiting step 10 to limit the lifting stroke of the mold adjustment plate 8.

[0042] like Figure 12 , Figure 13As shown, when the quick mold changing mechanism of this utility model is used on a foam molding machine, the mold assembly 3 includes a punch 32 for mounting on the moving mold assembly and a die 33 for mounting on the fixed mold assembly. The foam molding machine has the following steps when assembling the mold:

[0043] Step 1: Pre-assembly of mold components

[0044] Outside the foam molding machine, the punch 32, which has multiple molds installed on the mold base plate, is first fixed to the mold mounting frame 2 with bolts. The material gun 31 passes through the baffle plate 25 of the mold mounting frame 2. At the same time, the air inlet pipe 51, water inlet pipe 61, and drain pipe 71 of the punch 32 are connected to the corresponding pipe interfaces (air inlet pipe 51, water inlet pipe 61, and drain pipe 71) on the mold mounting frame 2 by abutting to ensure that the sealing ring (fluororubber material) is installed in place. The concave mold 33, which has fewer pipes, is directly installed on the molding machine.

[0045] Step 2: Overall hoisting and positioning

[0046] Using the mold mounting frame lifting component 26 on the top of the mold mounting frame 2, the entire mold mounting frame 2 is lifted by a crane. The crane moves the mold mounting frame 2 to the front of the mold transfer base 1, so that the locking hook 21 on the mold mounting frame 2 is folded into the mounting groove 11 on the mold transfer base 1 and then inserted into the mounting groove 11. Then the mold mounting frame 2 continues to descend, and the guide slope 212 on the lower surface of the locking hook 21 contacts the mounting pin 111 of the mold transfer base. The slope guides the mounting pin 111 to slide into the groove 211 of the locking hook.

[0047] Step 3: Secure with locking pins

[0048] After the locking hook 21 is fully inserted into the mounting slot 11 and installed in conjunction with the mounting pin 111, the locking pin is inserted from the locking hole 112 above the mold mounting frame 2 to lock the relative position of the locking hook 21 and the mounting pin 111, preventing the mold mounting frame 2 from coming off due to vibration or pressure during processing.

[0049] Step 4: Quick pipe connection

[0050] When the mold mounting frame 2 contacts the mold transfer base 1, the air inlet pipe 51, water inlet pipe 61, drain pipe 71, material receiving pipe 22 and material conveying pipe 12 of both will automatically align through the preset holes. Since the mold mounting frame 2 and the mold transfer base 1 have hollow structures inside, the material gun 31 will also pass through the mold transfer base 1. The sealing rings 501 of each pipe interface form a seal, which does not require manual tightening. The material gun 31 is connected to the material distributor 41 through the hose to realize the automatic supply of raw materials. The air supply main pipe 5 is connected to the air inlet pipe 51 respectively, the water supply main pipe 6 is connected to the water inlet pipe 61 respectively, and the drain pipe 7 is connected to the drain pipe 71 respectively, completing the quick mold installation of the mold transfer. After the processing is completed, the locking pin is pulled out, the crane lifts the mold mounting frame 2, the locking hook 21 is disengaged from the installation slot 11, the mold mounting frame 2 is transferred to the external area, the old mold is disassembled and the process of pre-installing the new mold is repeated, completing the quick installation and disassembly of the entire mold transfer.

[0051] The mold changing mechanism of this utility model also has a lifting and adjusting mechanism. If the length of the bottom film of the mold to be replaced is different, the height position of the mold adjusting plate 8 on the mold mounting frame and the mold moving base is adjusted by starting the screw jack 9. The punch 32 is aligned with the drain pipe below and installed accordingly. Then, the height of the mold adjusting plate 8 above is adjusted to achieve the adaptation of different mold lengths. For long mold adaptation: drive the screw jack to move the mold adjusting plate up to increase the distance between the mold and the drain pipe 71; for short mold adaptation: move the mold adjusting plate down to shorten the pipe connection distance and achieve the adaptation of molds of different specifications.

[0052] Compared to the previous method of installation inside the equipment, the quick mold-changing mechanism of this utility model adopts a design of direct hoisting and assembly after external assembly. This change brings a significant improvement in speed. In the previous internal installation method, operators had to perform cumbersome anti-locking installation steps inside the equipment, which was not only time-consuming and labor-intensive, but also increased the difficulty of operation and safety risks. However, with the direct hoisting and assembly method of this utility model after external assembly, operators only need to fix the mold base plate with multiple molds on it to the mold mounting frame with bolts outside the foam molding machine, and ensure that each pipeline interface is installed in place with the sealing ring. Then, using the mold mounting frame lifting component on the top of the mold mounting frame, the entire mold mounting frame is lifted by a crane and moved to the front of the mold-changing base. After aligning the locking hook on the mold mounting frame with the installation groove on the mold-changing base, it is moved horizontally and inserted into the installation groove. The whole process is simple and quick, without the need to enter the equipment for complicated operations, which greatly reduces the difficulty of operation and safety risks.

[0053] Furthermore, due to the adoption of external assembly, operators can perform assembly work in a more spacious and safer environment, improving work efficiency and safety. At the same time, this design also facilitates the maintenance and replacement of the mold frame and mold components, further enhancing the reliability and flexibility of the equipment. It achieves the technical goals of rapid mold change, dynamic adaptation to multiple mold specifications, and reduced manual intervention, significantly improving production efficiency and product quality while reducing operational difficulty and safety risks.

Claims

1. A quick mold changing mechanism for a foam molding machine, comprising a mold changing assembly, characterized in that: The mold transfer assembly includes a mold transfer base and a mold mounting frame for mounting the mold assembly. The mold mounting frame is connected to the mold transfer base via a detachable structure. The detachable structure includes several locking hooks and mounting slots correspondingly disposed on the mold mounting frame and the mold transfer base. The locking hooks pass into the mounting slots to connect the mold mounting frame and the mold transfer base. Both the mold mounting frame and the mold transfer base have hollow structures inside. Both the mold mounting frame and the mold transfer base are provided with corresponding air inlet pipes, water inlet pipes, and drain pipes.

2. The quick mold changing mechanism for a foam molding machine according to claim 1, characterized in that: At least one mounting slot is provided on each of the left and right sides of the mold transfer base. The mold mounting frame is provided with locking hooks on the left and right sides that are inserted into the mounting slots one by one. The hook groove of the locking hook is provided on the lower surface of the locking hook.

3. The quick mold changing mechanism for a foam molding machine according to claim 2, characterized in that: The mold transfer base is provided with an installation pin at the corresponding mounting groove. The hook groove includes a groove for accommodating the installation pin and a guide slope provided on at least one side of the groove to guide the installation pin into the groove.

4. The quick mold changing mechanism for a foam molding machine according to claim 3, characterized in that: The mold mounting frame has a locking hole above the mounting pin, and a locking pin can be inserted into the locking hole. The locking hook is inserted into the mounting groove, and the locking hook is locked in the mounting groove by the mounting pin and the locking pin.

5. A quick mold changing mechanism for a foam molding machine according to any one of claims 1-4, characterized in that: The mold assembly frame consists of upright plates and side plates. Several baffle plates are provided in the middle of the mold assembly frame. A mold assembly frame hanger is provided at the upper end of the mold assembly frame. The drain pipe is located at the lower end of the mold assembly frame and the mold moving base.

6. The quick mold changing mechanism for a foam molding machine according to claim 5, characterized in that: Both the mold mounting frame and the mold moving base are equipped with mold adjustment plates. The air inlet pipe and the water inlet pipe are respectively installed on the mold adjustment plates of the mold mounting frame and the mold moving base. Both the mold mounting frame and the mold moving base are equipped with lifting adjustment mechanisms that can drive the mold adjustment plates to rise and fall axially.

7. The quick mold changing mechanism for a foam molding machine according to claim 6, characterized in that: The lifting and adjusting mechanism includes at least one screw jack mounted on the mold mounting frame or the mold moving base. The output end of the screw jack is connected to the corresponding mold adjusting plate, and the screw jack drives the mold adjusting plate axially closer to or further away from the drain pipe.

8. A quick mold changing mechanism for a foam molding machine according to claim 5, characterized in that: The mold mounting frame and the mold shifting base are each provided with several corresponding material receiving pipes and material conveying pipes at their upper ends. The mold mounting frame is provided with a mold assembly bolted to the mold mounting frame. The mold assembly is provided with several material guns that supply material to the mold assembly. One end of each material gun passes through the mold mounting frame and the mold shifting base. The mold shifting base is provided with a material cylinder and a material distributor connected to the material cylinder. The material receiving pipe is used to connect to the material gun and supply material to it.

9. A quick mold changing mechanism for a foam molding machine according to claim 8, characterized in that: The surfaces of the material conveying pipe, air inlet pipe, water inlet pipe and drain pipe are all provided with sealing ring mounting grooves, and sealing rings are provided in the sealing ring mounting grooves. The mold assembly is provided with air inlet pipe, water inlet pipe and drain pipe that are connected to the mold mounting frame.

10. A quick mold changing mechanism for a foam molding machine according to claim 8, characterized in that: The mold transfer base is provided with an air supply pipe and a water supply pipe above it, and a drainage pipe below it. The air supply pipe is connected to the air inlet pipe, the water supply pipe is connected to the water inlet pipe, and the drainage pipe is connected to the drainage pipe.

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