Foaming and shaping mold of press cabin and refrigerator body foaming equipment

Abstract

The invention discloses a foaming and shaping mold of a press bin and refrigerator body foaming equipment, the foaming and shaping mold comprises a base capable of being inserted into a containing cavity and a shaping unit arranged on the base, the foaming and shaping mold is composed of a movable panel and a driving assembly, and the movable panel has a return state and a working state; the panel is folded, so that the maximum projection outline of the mold is positioned in the range of the accommodating cavity, and interference-free entering and nondestructive protection are ensured; in the working state, the panel extends outwards to abut against and fill the inner wall of the press bin. The driving assembly drives the panel to be switched between the two states. By means of the self-adaptive mechanism that contraction and mold entering are conducted firstly, and then expansion and supporting are conducted, assembly gaps are eliminated, solid reverse supporting is provided, the quality problems such as wall face deformation and bulging of a press bin and underbeam flash seams in the foaming process are effectively eradicated, the size stability and the forming quality are improved, and the maintenance frequency is reduced.

Description

Technical Field

[0001] This application relates to the field of refrigerator manufacturing technology, and in particular to a foaming and shaping mold for a press chamber and a refrigerator body foaming equipment. Background Technology

[0002] In the foaming production process of refrigerators and other home appliances, the press chamber, as a key structure integrally molded with the casing, directly affects the shape accuracy of subsequent component assembly and the overall quality of the machine. Commonly used technologies include... Figure 1 As shown, the shaping of the compressor chamber 300 typically relies on a rigid support block 400 with a fixed profile. However, this rigid support has significant drawbacks in practical applications: To ensure that the rigid support block 400 can be smoothly inserted into the narrow space of the press chamber 300's receiving cavity 301, or to avoid scratching the surface of the precision inner liner during insertion, a certain assembly gap must be reserved between the physical contour of the rigid support block 400 and part of the inner wall 304 of the press chamber 300. This gap will cause part of the inner wall 304 of the press chamber 300 to be unsupported during the foaming expansion stage. Under the action of huge foaming stress, these walls are very prone to displacement deformation, bulging, or flash cracks.

[0003] In the later stages of production, in order to repair defects such as gaps and deformation after foaming, frequent manual intervention is often required for equipment debugging and maintenance, which seriously restricts production efficiency and product consistency. Summary of the Invention

[0004] The purpose of this application is to provide a foaming and shaping mold for a press chamber and a foaming equipment for a refrigerator body, which solves the industry problem of traditional shaping molds being unable to balance convenient mold entry and rigid support.

[0005] To achieve the above objectives, one embodiment of this application provides a foaming and shaping mold for a press chamber, wherein the press chamber defines a receiving cavity, and the foaming and shaping mold includes: The base is configured to be inserted into the receiving cavity; At least one shaping unit is disposed on the base. The at least one shaping unit includes a movable panel and a drive assembly. The movable panel has a retracted state and an operating state. In the retracted state, the movable panel assembly retracts so that the maximum projected profile of the foaming shaping mold in the insertion direction is within the receiving cavity, allowing the foaming shaping mold to enter the receiving cavity without interference. In the operating state, the movable panel extends outward to abut against and fill the inner wall of the press chamber. The drive assembly is connected to the movable panel and drives the movable panel to switch between the retracted state and the operating state.

[0006] As a further improvement of the present application, the press chamber comprises a first wall; The at least one shaping unit comprises a first shaping unit, a movable panel of the first shaping unit is arranged to abut against a first panel of the first wall, and the first shaping unit is configured to drive the first panel to move along a first direction to abut against the first wall.

[0007] As a further improvement of the present application, a plurality of avoiding holes are formed on the base; The driving assembly of the first shaping unit comprises: A first cylinder is mounted on the base; A driving slide plate is driven by an output end of the first cylinder to reciprocate along a third direction, and the first direction and the third direction are arranged at a non-parallel angle; A first transmission assembly is connected between the driving slide plate and the first panel, and the first transmission assembly is configured to be driven by the driving slide plate to generate unfolding or folding actions to drive the first panel to move; when the first transmission assembly is unfolded, the first transmission assembly is exposed from the avoiding hole, and the first panel is away from the surface of the base; when the first transmission assembly is folded, at least a part of the first transmission assembly is accommodated in the avoiding hole, and the first panel is attached to the surface of the base; A first guide mechanism is arranged between the base and the first panel, and the first guide mechanism is configured to limit the movement of the first panel along the first direction.

[0008] As a further improvement of the present application, the first transmission assembly comprises four groups, respectively corresponding to four avoiding holes on the base; Each group of the first transmission assembly comprises a connecting rod assembly, the bottom of the connecting rod assembly is connected to the driving slide plate, and the top of the connecting rod assembly is connected to the first panel; by changing the position of the driving slide plate relative to the first panel in the third direction, the inclination angle of the connecting rod assembly is changed, and the height of the first panel in the first direction is adjusted.

[0009] As a further improvement of the present application, the first wall extends along a horizontal plane, the first direction is a vertical direction perpendicular to the horizontal plane, and the third direction is parallel to the horizontal plane; When the first transmission assembly is unfolded, the first panel is located above the upper surface of the base; When the first transmission assembly is folded, the lower surface of the first panel is attached to the upper surface of the base.

[0010] As a further improvement of the present application, the press cavity comprises a second wall, the second wall comprises an inclined wall which is at least partially inclined to the horizontal plane; The at least one shaping unit comprises a second shaping unit, a movable panel of the second shaping unit is arranged to abut against a second panel of the second wall, the second panel is shaped to match a side of the second wall, the second shaping unit is configured to drive the second panel to move in a second direction to abut against the second wall, the second direction is arranged to form a non-parallel angle with a normal line of the inclined wall.

[0011] As a further improvement of the present application, the driving assembly of the second shaping unit comprises: a second cylinder, the second cylinder is mounted on the base; a slider, an output end of the second cylinder drives the slider to reciprocate in a fourth direction, the second direction is arranged to form a non-parallel angle with the fourth direction; a second transmission assembly, connected between the slider and the second panel, the second transmission assembly is used to convert the movement of the slider in the fourth direction into the movement of the second panel in the second direction; a second guide mechanism, arranged between the base and the second panel, the second guide mechanism is configured to limit the movement of the second panel in the second direction.

[0012] As a further improvement of the present application, the second transmission assembly comprises: a driving seat, fixedly mounted on the slider, an inclined guide groove is formed in the driving seat, the inclined guide groove has a preset inclination angle relative to the fourth direction; a driven connecting block, fixedly connected to a side of the second panel away from the second wall; a guide shaft, arranged on the driven connecting block, the guide shaft is slidingly fitted in the inclined guide groove; When the slider drives the driving seat to move in the fourth direction, the inner wall of the inclined guide groove extrudes the guide shaft to drive the driven connecting block and the second panel to move in the second direction.

[0013] As a further improvement of the present application, the driving assembly comprises a control valve, the control valve is configured to allow the movable panel to maintain a constant pressure on the inner wall of the press cavity during foaming to adapt to the stress changes generated by foaming.

[0014] To achieve one of the above purposes, an embodiment of the present application provides a refrigerator body foaming equipment, comprising the foaming shaping mold of the press cavity.

[0015] Compared with the common technology, the foaming shaping mold has the following beneficial effects: the foaming shaping mold utilizes the driving assembly to dynamically manage the movable panel, makes the movable panel in the retracted state in the entering process, ensures that the maximum projection of the shaping mold in the insertion direction can avoid the cavity wall surface without interference, realizes the lossless protection and rapid mold entering of the workpiece. In the foaming shaping stage, the movable panel is switched to the working state and actively extends outward, eliminates the reserved assembly gap through physical displacement, makes it tightly abut and fill in the inner wall of the press chamber, provides a solid reverse support for the foaming process. This adaptive mechanism of first shrinking into the mold and then expanding the support not only eliminates the quality problems such as wall deformation, bulging and lower beam flash of the press chamber during foaming caused by the gap, but also greatly reduces the frequency of manual maintenance, ensures the dimensional stability and forming quality of the press chamber under the complex foaming stress environment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the press chamber and the rigid support block in the assembly of the common technology; Figure 2 is a structural schematic diagram of the foaming shaping mold of an embodiment of the present application; Figure 3 is an exploded view of the foaming shaping mold of an embodiment of the present application; Figure 4 is an exploded view of the foaming shaping mold and the press chamber of an embodiment of the present application; Figure 5 is a sectional view of the foaming shaping mold of an embodiment of the present application; Figure 6 is an exploded view of the first shaping unit of an embodiment of the present application; Figure 7 is an exploded view of the second shaping unit of an embodiment of the present application; Among them, 100 is a foaming and shaping mold; 10 is a base; 11 is a clearance hole; 12 is an upper surface; 20 is at least one shaping unit; 201 is a movable panel; 202 is a drive assembly; 21 is a first shaping unit; 211 is a first panel; 212 is a first cylinder; 213 is a drive slide plate; 214 is a first transmission assembly; 214a is a connecting rod assembly; 215 is a first guide mechanism; 22 is a second shaping unit; 221 is a second panel; 222 is a second cylinder; 223 is a slider; and 224 is a second transmission assembly. ; 2241, Drive seat; 2242, Inclined guide groove; 2243, Driven connecting block; 2244, Guide shaft; 225, Second guide mechanism; 300, Press chamber; 301, Receiving cavity; 302, First wall; 302a, Bottom wall; 303, Second wall; 303a, Stepped wall; 3031, Inclined wall; 304, Inner wall; 305, Top wall; 400, Rigid support block; T1, First direction; T2, Second direction; T3, Third direction; T4, Fourth direction; T5, Insertion direction; L1, Normal. Detailed Implementation

[0017] The present application will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present application, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of this application.

[0018] It should be understood that terms such as “above,” “over,” “below,” and “under” used herein to indicate spatial relative position are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms “spatial relative position” may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0019] One embodiment of this application provides a foaming and shaping mold for a press chamber and a foaming equipment for a refrigerator body, which solves the industry problem of traditional shaping molds being unable to balance convenient mold entry and rigid support.

[0020] This embodiment provides a foaming and shaping mold 100 for use in the home appliance manufacturing industry, particularly in the foaming production line of refrigerators, freezers and other products.

[0021] Taking refrigerators as an example, in the foaming process of the refrigerator body, the foaming material (such as polyurethane) expands violently within a confined space, generating enormous expansion pressure. In order to ensure the structure of the body, especially the geometric accuracy of the press chamber at position 300, effective physical support must be provided inside during the foaming process.

[0022] 300 compressor chamber Figure 1As shown, it is a stepped structure, including bottom wall 302a, step wall 303a, top wall 305, below the bottom wall 302a, step wall 303a and top wall 305, there can be a containing cavity 301, the lower surface of the bottom wall 302a, step wall 303a and top wall 305, hereinafter as the inner wall 304.

[0023] To clearly express the position and direction described in this embodiment, in this embodiment, the press bin 300 is usually located at the bottom of the refrigerator, the containing cavity 301 is defined below the press bin 300, and the opposite direction is defined as "up"; and, the inner wall 304 is the lower surface of the press bin 300, and the foaming is carried out above the press bin 300. The refrigerator usually also includes a bottom plate below the press bin 300 and a back plate behind the press bin 300 for closing the containing cavity 301, and the foaming shaping mold 100 can be inserted into the containing cavity 301 from back to front, and the left and right sides of the horizontal plane on which the front and back are located are left and right respectively, and the plane on which the front and back are located is a horizontal plane, and the direction can be referred to Figures 2 to 4 .

[0024] This embodiment is to solve the inherent contradiction between convenient mold entry and rigid support of the "rigid support block 400" in the conventional background art. Since the inner wall 304 of the press bin 300 is usually composed of a thin-walled plastic part or sheet metal, it is extremely easy to be damaged. The conventional rigid support block 400 of fixed size often needs to be designed with a larger assembly gap to ensure smooth insertion into the press bin 300, but this will lead to insufficient support during foaming, resulting in quality defects such as bulging, deformation and even flashing. This embodiment provides a "dynamic adjustable and state adaptive" filling architecture to deeply couple the physical profile of the foaming shaping mold 100 with the production process (entry, support, exit), thereby realizing zero-gap and high-rigid support of the inner wall 304 without damaging the press bin 300.

[0025] The foaming shaping mold 100 of the press bin 300 provided by the embodiment, as shown in Figures 2-4 , includes a base 10 and at least one shaping unit 20.

[0026] The base 10 is configured to be insertable into the accommodating cavity 301. The base 10 serves as a load-bearing body and force reference of the entire foaming shaping mold 100, and is configured to have a geometric size capable of entering the accommodating cavity 301 of the press chamber 300. The base 10 is usually composed of a high-strength metal frame or a plate-shaped part to ensure that no overall deformation occurs under the high pressure environment generated by foaming. In actual operation, the base 10 is connected with an external automated sliding table or mechanical arm to guide the entire device to be accurately sent into the accommodating cavity 301 of the press chamber 300 along a predetermined insertion direction T5. The base 10 not only provides a mounting fulcrum for subsequent components, but also serves as a counterforce reference to transmit the foaming pressure to the external rigid support structure through the base 10.

[0027] At least one shaping unit 20 is arranged on the base 10, and the at least one shaping unit 20 comprises a movable panel 201 and a driving assembly 202, and each shaping unit is cooperated by the movable panel 201 and the corresponding driving assembly 202.

[0028] The movable panel 201 serves as an interface directly in physical contact with the inner wall 304 of the press chamber 300, and the position of the movable panel 201 is not fixed but has two functional poses, i.e., a retracted state and a working state. The movable panel 201 endows the foaming shaping mold 100 with the ability of "spatial self-adaptation", i.e., the foaming shaping mold 100 can dynamically adjust the external boundary according to the process stage.

[0029] In the retracted state, the movable panel 201 assembly is retracted, so that the maximum projection profile of the foaming shaping mold 100 in the insertion direction T5 is located within the range of the accommodating cavity 301 to allow the foaming shaping mold 100 to enter the accommodating cavity 301 without interference, The retracted state is mainly used when the foaming shaping mold 100 is in the process of entering or exiting the accommodating cavity 301 of the press chamber 300. At this time, the movable panel 201 assembly is retracted towards the inside of the base 10, so that the maximum projection profile of the entire foaming shaping mold 100 in the insertion direction T5 is strictly controlled within the cross-sectional range of the accommodating cavity 301. The foaming shaping mold 100 in the insertion direction T5 can be in the upward or forward direction, and the embodiment adopts the forward insertion into the accommodating cavity 301.

[0030] The retracted state of the movable panel 201 realizes "non-contact" entry. Since the maximum outer diameter of the foaming shaping mold 100 is smaller than the minimum inner diameter of the accommodating cavity 301 at this time, there is sufficient safety clearance between the foaming shaping mold 100 and the inner wall 304 of the press chamber 300 when the foaming shaping mold 100 enters the accommodating cavity 301 at high speed. This completely eliminates the interference risk caused by centering deviation or tolerance fluctuation of the traditional shaping block, effectively protects the surface of the inner wall 304, and greatly improves the beat speed and stability of the foaming shaping mold 100.

[0031] In the working state, the movable panel 201 extends outward to abut and fill the inner wall 304 of the press chamber 300; the driving assembly 202 is connected to the movable panel 201, and the driving assembly 202 drives the movable panel 201 to switch between the retracted state and the working state.

[0032] The working state is used to act when the foaming shaping mold 100 completely enters the containing cavity 301 and reaches a predetermined depth, at which time the movable panel 201 is actively expanded from the inside out until its outer surface abuts and fills the inner wall 304 of the press chamber 300, thereby achieving a "zero gap" filling support.

[0033] Through the active displacement of the movable panel 201, the physical gap reserved for entry is compensated, so that at least one shaping unit 20 forms a closed force system with the inner wall 304 of the press chamber 300 before foaming begins. During the expansion of the foaming material, the movable panel 201 can provide immediate and high-rigid counter-supporting force, forcibly constraining the press chamber 300 to remain in the designed shape, fundamentally eliminating common problems such as local bulging and deformation of the lower beam position caused by foaming stress, and significantly enhancing the shaping accuracy of the position of the press chamber 300.

[0034] The driving assembly 202 is connected between the movable panel 201 and the base 10, serving as a power source for state switching, and precisely controlling the reversible reciprocating movement of the movable panel 201 between the two states. The driving assembly 202 can provide sufficient pushing or pulling force at the correct time node according to the instructions of the control system, ensuring that the movable panel 201 can be stably locked in position in the working state and resist the huge foaming expansion force without retreating, thereby maintaining the stability of foaming shaping.

[0035] The present embodiment constructs a dynamic filling mode of "shrinking when entering the press chamber 300 and expanding during foaming shaping" through the ingenious cooperation of the base 10, the movable panel 201, and the driving assembly 202. This self-adaptive structure not only takes into account the efficiency and safety of production, but also solves the industry problem that the press chamber 300, which has a relatively complex shape, is prone to deformation during foaming through the technical means of active abutment.

[0036] In one embodiment thereof, the press chamber 300 includes a first wall 302; at least one shaping unit 20 includes a first shaping unit 21, the movable panel 201 of the first shaping unit 21 is arranged as a first panel 211 abutting the first wall 302, and the first shaping unit 21 is configured to drive the first panel 211 to act in a first direction T1 to abut the first wall 302.

[0037] The first shaping unit 21 is a mechanism specially configured for shaping and supporting the first wall 302. The supporting force of the first shaping unit 21 on the first panel 211 can precisely and directionally act on the first wall 302, so as to maintain the geometric flatness of the first wall 302 during the foaming expansion process by the active abutment of the first panel 211, and prevent local deformation of the wall surface due to uneven pressure.

[0038] In order to meet the large stroke support while maintaining the compactness of the device as a whole, the driving assembly 202 of the first shaping unit 21 and the base 10 structure are deeply optimized in space in this embodiment. Specifically, as shown in Figure 3 , a plurality of avoiding holes 11 are formed on the base 10. As shown in Figure 6 , the driving assembly 202 of the first shaping unit 21 includes a first cylinder 212, a driving slide plate 213, a first transmission assembly 214, and a first guide mechanism 215.

[0039] The driving assembly 202 of the first shaping unit 21 adopts a “horizontal driving-vertical conversion” transmission mode to save space.

[0040] The first cylinder 212 is installed on the base 10, and the output end thereof is connected to and drives the driving slide plate 213 to reciprocate along the horizontal third direction T3. The first direction T1 and the third direction T3 are arranged at a non-parallel included angle.

[0041] The first transmission assembly 214 is connected between the driving slide plate 213 and the first panel 211. The first transmission assembly 214 is configured to be driven by the driving slide plate 213 to generate unfolding or folding actions, so as to drive the first panel 211 to act. When the first transmission assembly 214 is unfolded, the first transmission assembly 214 is exposed from the avoiding hole 11, so that the first panel 211 is away from the surface of the base 10. When the first transmission assembly 214 is folded, at least a part of the first transmission assembly 214 is accommodated in the avoiding hole 11, so that the first panel 211 is attached to the surface of the base 10. This immersive storage design enables the first panel 211 to be closely attached to the surface of the base 10 in the retracted state, greatly compressing the closed thickness of the foaming shaping mold 100.

[0042] The first guide mechanism 215 is arranged between the base 10 and the first panel 211. The first guide mechanism 215 is configured to limit the movement of the first panel 211 along the first direction T1, and ensure the stability of the movement process.

[0043] In an embodiment thereof, as shown in Figure 3 and 6As shown, the first transmission assembly 214 includes four groups, corresponding to the four escape holes 11 on the base 10 respectively; the four groups of first transmission assembly 214 ensure that the first panel 211 is uniformly stressed and stably lifted, and the four groups of first transmission assembly 214 are respectively symmetrically distributed at the positions of the four escape holes 11 on the base 10.

[0044] As shown in Figure 5 and 6 each group of first transmission assembly 214 includes a connecting rod assembly 214a, the bottom of the connecting rod assembly 214a is connected to the driving slide plate 213, and the top of the connecting rod assembly 214a is connected to the first panel 211; by changing the position of the driving slide plate 213 relative to the first panel 211 in the third direction T3, the inclination angle of the connecting rod assembly 214a is changed, and the height of the first panel 211 in the first direction T1 is adjusted.

[0045] The connecting rod assembly 214a adopts a hinge four-bar mechanism, as shown in Figure 5 the upper connecting rod moves in the up-down direction, the left and right connecting rods (rocker arms) swing, and the lower connecting rod moves in the front-back direction; the connecting rod assembly 214a efficiently converts the displacement of the driving slide plate 213 in the third direction T3 into the height change of the first panel 211 in the first direction T1. The synchronous operation of the four groups of connecting rod assemblies 214a enables the first panel 211 to always maintain a horizontal posture for lifting, and can provide the first wall 302 with omnidirectional and balanced abutting pressure in the working state.

[0046] In an embodiment thereof, the direction layout as described above is adopted, and the orientation of the device in the spatial dimension is determined. In this configuration, the first wall 302 extends along the horizontal plane, the first direction T1 is the vertical direction perpendicular to the horizontal plane, and the third direction T3 is parallel to the horizontal plane; when the first transmission assembly 214 is unfolded, the first panel 211 is located above the upper surface 12 of the base 10; when the first transmission assembly 214 is folded, the lower surface of the first panel 211 is attached to the upper surface 12 of the base 10.

[0047] Under such orthogonal motion trajectories, the structures are arranged neatly in space, the space utilization efficiency is improved, the bottom wall 302a extending horizontally is provided with support on the horizontal plane, the extrusion force in the up-down direction during foaming is overcome, the stress is more uniform, and through the horizontal driving of the first cylinder 212 in the front-back direction, the driving slide plate 213 is also a plate-shaped structure extending horizontally on the horizontal plane, and the flat space below the press chamber 300 is reasonably utilized.

[0048] In one embodiment, the foaming shaping mold 100 is also specially designed to adapt to the complex non-horizontal area in the structure of the press chamber 300. Since the inner wall 304 of the press chamber 300 of the refrigerator or freezer is designed to avoid the press chamber 300 or to achieve a specific air flow channel design, the second wall 303 of the inner wall 304 generally includes a second wall 303 that is at least partially inclined to the horizontal plane, as shown in Figure 1 and 4 .

[0049] In order to realize the integrated shaping of the complex profile of the second wall 303, at least one shaping unit 20 includes a second shaping unit 22, as shown in Figure 5 and 7 , the movable panel 201 of the second shaping unit 22 is arranged to abut the second panel 221 of the second wall 303, the second panel 221 is shaped to match the shape of one side of the second wall 303, and the surface geometry of the second panel 221 is designed to profile the inclined surface of the second wall 303, so as to ensure that the maximum contact area can be achieved when the second panel 221 abuts the second wall 303, and uniform support can be achieved.

[0050] In terms of motion logic, the second shaping unit 22 drives the second panel 221 to move in a specific second direction T2. In order to optimize the demolding path and prevent mechanical interference in the special-shaped cavity, the second direction T2 is set to be non-parallel to the normal line L1 perpendicular to the inclined wall 3031, as shown in Figure 5 , so as to ensure that the second panel 221 can be attached to the inclined wall 3031 in a manner similar to "oblique cutting", and can smoothly exit after shaping is completed, effectively avoiding the phenomenon of structural deadlock caused by foaming overflow adhesion.

[0051] In order to drive the above-mentioned second panel 221 in the limited height space inside the base 10, in one embodiment, as shown in Figure 5 and 7 , the driving assembly 202 of the second shaping unit 22 includes a second cylinder 222, a sliding block 223, a second transmission assembly 224 and a second guide mechanism 225, which provides the second shaping unit 22 with a set of efficient motion conversion architecture.

[0052] The second cylinder 222 is installed in the base 10, and the output end thereof is connected and drives a sliding block 223 to reciprocate along a fourth direction T4, and the second direction T2 and the fourth direction T4 are arranged at a non-parallel angle, which makes the arrangement of the second cylinder 222 can make the most of the space for placing the compressor surrounded by the top wall 305 and the stepped wall 303a.

[0053] The second transmission assembly 224 is connected between the slider 223 and the second panel 221, and is configured to convert the movement of the slider 223 along the fourth direction T4 into the movement of the second panel 221 along the second direction T2.

[0054] The second guide mechanism 225 is arranged between the base 10 and the second panel 221, and is configured to limit the movement of the second panel 221 along the second direction T2, and to ensure the trajectory accuracy of the second panel 221 during the movement. The second guide mechanism 225 and the first guide mechanism 215 described above can both be guide posts or guide rails, and the second guide mechanism 225 limits the second panel 221 to perform high-precision linear reciprocating movement.

[0055] The structure of the second shaping unit 22 realizes the decoupling of the second cylinder 222 and the second panel 221 in the movement direction, which not only ensures the compact structure, but also improves the flexibility of shaping complex cavities.

[0056] In an embodiment, the second transmission assembly 224 realizes high-precision direction conversion by using the wedge principle, as shown in FIG. 6. Figure 5 and 7 The second transmission assembly 224 includes a driving seat 2241, a driven connecting block 2243, and a guide shaft 2244.

[0057] The driving seat 2241 is fixedly installed on the slider 223, and the driving seat 2241 is provided with an inclined guide groove 2242, which has a preset inclination angle relative to the fourth direction T4. The driven connecting block 2243 is fixedly connected to the side of the second panel 221 away from the second wall 303. The guide shaft 2244 is arranged on the driven connecting block 2243 and is slidably fitted in the inclined guide groove 2242. The guide shaft 2244 can be a pin shaft or a roller.

[0058] When the slider 223 drives the driving seat 2241 to move along the fourth direction T4, the second transmission assembly 224 limits the degrees of freedom of the second panel 221, and the inner wall of the inclined guide groove 2242 generates a lateral extrusion force directly acting on the guide shaft 2244. The inner wall of the inclined guide groove 2242 extrudes the guide shaft 2244 to drive the driven connecting block 2243 and the second panel 221 to move along the second direction T2.

[0059] The wedge force generated by the cooperation of the guide shaft 2244 and the inclined guide groove 2242 drives the driven connecting block 2243 and the second panel 221 to accurately extend along the second direction T2 to abut against the inclined wall 3031, or to forcibly retract when the second cylinder 222 is reversely pulled.

[0060] By adjusting the angle of the inclined groove, a significant force amplification effect can be generated, thereby obtaining a huge clamping force on the second panel 221 with a small cylinder thrust, ensuring the rigidity of the forming; and since the guide shaft 2244 is always constrained within the inclined guide groove 2242, its movement has extremely strong compulsion and synchronization, completely eliminating the risk of the second panel 221 being pressed backward due to excessive foaming pressure.

[0061] In one embodiment, the drive assembly 202 includes a control valve configured to allow the movable panel 201 to maintain a constant pressure on the inner wall 304 of the press chamber 300 during the foaming process to accommodate stress changes caused by foaming.

[0062] In this embodiment, the action command of the drive component 202 (first cylinder 212 and / or second cylinder 222) may be simplified to two states: "extend" and "retract". However, by configuring specific control valves (such as precision pressure regulating valves, proportional valves or relief valves) in the air circuit system, the foaming and shaping mold 100 is given the ability to self-adjust for positional tolerances and stress changes during the foaming process.

[0063] Specifically, the control valve is configured to execute a constant pressure floating support strategy.

[0064] When the drive assembly 202 drives the movable panel 201 to extend outward and enter the working state, its goal is not to reach a mechanically fixed dead point position, but to apply a preset thrust outward. Due to the dimensional tolerances in the manufacturing process of the compressor chamber 300 (i.e., the size of the compressor chamber 300 in each refrigerator may vary slightly), the movable panel 201 will stop moving the instant it contacts the inner wall 304 of the compressor chamber 300. At this time, regardless of whether the actual size of the compressor chamber 300 is larger or smaller, the movable panel 201 can naturally "find" and fit into the actual position of the inner wall 304 by relying on air pressure. This feature of automatically adapting to different cavity depths without complex sensor feedback enables the self-adaptive filling of the foaming shaping mold 100.

[0065] During the foaming process, the expansion of polyurethane foam generates dynamically changing internal stress. The control valve maintains a constant pressure applied by the drive assembly 202. If the expansion force generated by foaming momentarily exceeds the preset thrust of the first cylinder 212 and / or the second cylinder 222, the gas in the first cylinder 212 and / or the second cylinder 222 is compressible (i.e., pneumatic spring effect), allowing the movable panel 201 to produce extremely small yielding buffer within the micrometer range, and then quickly return to its original position under air pressure. This dynamic balancing mechanism ensures that the movable panel 201 always adheres to the inner wall 304 of the housing with a constant pressure, preventing both excessive pressure from crushing the inner liner and insufficient pressure from causing foam bulging, thus achieving adaptive adjustment to the foaming process environment.

[0066] Through this low-cost and high-reliability adaptive control, the foaming shaping die 100 ingeniously solves the problem that the rigid die cannot adapt to the tolerance.

[0067] An embodiment of the present application provides a refrigerator body foaming equipment comprising the foaming shaping die 100 of the press chamber 300.

[0068] In the modern refrigerator manufacturing process, after the body and the press chamber 300 are assembled, the refrigerator body foaming equipment is used for foaming. Since there are inevitable matching tolerances or difference points between the external clamp (used for fixing the body shell) and the internal die (used for supporting the body interior), the press chamber 300 area is often in the “blind area” or “weak area” of support.

[0069] It is embodied that: in order to ensure that the external clamp can be closed, the position of the press chamber 300 is often reserved with a large safety gap, which causes the place to have no support during foaming. Under the action of high pressure during foaming, the press chamber 300 lacking effective support is prone to position deformation and surface bulging. Especially at the joint of the lower beam of the press chamber 300, deformation will cause serious flash (overflow or crack) problems.

[0070] The refrigerator body foaming equipment comprising the foaming shaping die 100 easily enters the interior of the press chamber 300 by using the extremely small profile of the foaming shaping die 100 in the retracted state, and completely avoids the entering interference problem caused by inaccurate centering of the refrigerator body foaming equipment or die tolerance. By using the powerful expansion and adaptive fitting of the foaming shaping die 100 in the working state, each wall surface (including the top wall 305, the stepped wall 303a, and the bottom wall 302a) of the press chamber 300 can be accurately “pushed” back to the standard design position from the inside, the reserved gap is eliminated, the foaming stress cannot cause bulging, the geometry of the press chamber 300 is forcibly corrected, the key matching parts such as the lower beam of the refrigerator are tightly jointed, and the flash phenomenon is eliminated.

[0071] The foaming shaping die 100 and the refrigerator body foaming equipment of the present application are not only a simple filling tool, but also a systematic solution for the special structure of the press chamber 300 and its process defects. The deformation of the press chamber 300, which cannot be completely eliminated by manual mold repair and debugging, is solved, and the automation level and product yield of the refrigerator foaming line are significantly improved.

[0072] Compared with the commonly used technology, the embodiment has the following beneficial effects: The foaming shaping mold 100 uses the driving assembly 202 to dynamically manage the movable panel 201, and in the entering process, the movable panel 201 is in the retracted state, and by actively folding the mechanism contour, it is ensured that the maximum projection of the shaping mold in the insertion direction T5 can avoid the wall surface of the accommodating cavity 301 without interference, realizing the lossless protection of the workpiece and the rapid mold entering. In the foaming shaping stage, the movable panel 201 is switched to the working state and actively extends outward, and by physical displacement, the reserved assembly gap is eliminated, so that it is tightly abutted and filled in the inner wall 304 of the press chamber 300, providing a solid reverse support for the foaming process. This adaptive mechanism of first shrinking into the mold and then expanding the support not only eliminates the quality problems such as wall deformation, bulging and lower beam flash of the press chamber 300 during foaming caused by the gap, but also greatly reduces the frequency of manual maintenance in the later stage, ensuring the dimensional stability and forming quality of the press chamber 300 under complex foaming stress environment.

[0073] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0074] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present application, and they are not used to limit the protection scope of the present application, and any equivalent embodiments or changes made without departing from the specific spirit of the present application should be included in the protection scope of the present application.

Claims

1. A foaming shaping die (100) of a press chamber (300) which defines a receiving cavity (301), characterized in that, The foaming shaping mold (100) comprises: a base (10) configured to be insertable into the accommodating cavity (301); at least one shaping unit (20) arranged on the base (10), the at least one shaping unit (20) comprising a movable panel (201) and a driving assembly (202), the movable panel (201) having a retracted state and a working state, in the retracted state, the movable panel (201) is folded to make the maximum projection profile of the foaming shaping mold (100) in the insertion direction (T5) within the range of the accommodating cavity (301), so as to allow the foaming shaping mold (100) to enter the accommodating cavity (301) without interference, in the working state, the movable panel (201) is extended outward to abut and fill the inner wall (304) of the press chamber (300); the driving assembly (202) is connected to the movable panel (201), and the driving assembly (202) drives the movable panel (201) to switch between the retracted state and the working state.

2. The foaming shaping mold (100) of a press chamber according to claim 1, characterized in that, The press chamber (300) comprises a first wall (302); The at least one shaping unit (20) comprises a first shaping unit (21), the movable panel (201) of the first shaping unit (21) is arranged as a first panel (211) abutting the first wall (302), and the first shaping unit (21) is configured to drive the first panel (211) to act along a first direction (T1) to abut the first wall (302).

3. The foaming shaping mold (100) of a press chamber according to claim 2, characterized in that, The base (10) is provided with a plurality of avoiding holes (11); The driving assembly (202) of the first shaping unit (21) comprises: a first cylinder (212) mounted on the base (10); a driving slide plate (213) driven by the output end of the first cylinder (212) to slide back and forth along a third direction (T3), the first direction (T1) and the third direction (T3) are arranged at a non-parallel angle; a first transmission assembly (214) connected between the driving slide plate (213) and the first panel (211), the first transmission assembly (214) is configured to be driven by the driving slide plate (213) to generate unfolding or folding action to drive the first panel (211) to act; wherein, when the first transmission assembly (214) is unfolded, the first transmission assembly (214) is exposed from the avoiding hole (11), so that the first panel (211) is away from the surface of the base (10); when the first transmission assembly (214) is folded, at least a part of the first transmission assembly (214) is accommodated in the avoiding hole (11), so that the first panel (211) is attached to the surface of the base (10); A first guide mechanism (215) is arranged between the base (10) and the first panel (211), and is configured to limit the movement of the first panel (211) in the first direction (T1).

4. The foamed shaping mold (100) of a press chamber according to claim 3, characterized in that The first transmission assembly (214) includes four groups, each corresponding to one of the four avoiding holes (11) on the base (10); Each group of the first transmission assembly (214) includes a connecting rod assembly (214a), the bottom of the connecting rod assembly (214a) is connected to the driving slide plate (213), and the top of the connecting rod assembly (214a) is connected to the first panel (211); by changing the position of the driving slide plate (213) relative to the first panel (211) in the third direction (T3), the inclination angle of the connecting rod assembly (214a) is changed, and the height of the first panel (211) in the first direction (T1) is adjusted.

5. The foamed shaping mold (100) of a press chamber according to claim 4, characterized in that The first wall (302) extends along a horizontal plane, the first direction (T1) is a vertical direction perpendicular to the horizontal plane, and the third direction (T3) is parallel to the horizontal plane; When the first transmission assembly (214) is unfolded, the first panel (211) is located above the upper surface (12) of the base (10); When the first transmission assembly (214) is folded, the lower surface of the first panel (211) is attached to the upper surface (12) of the base (10).

6. The foaming shaping mold (100) of a press chamber according to claim 1, characterized in that, The press chamber (300) includes a second wall (303), and the second wall (303) includes an inclined wall (3031) inclined at least partially to the horizontal plane; The at least one shaping unit (20) includes a second shaping unit (22), an active panel (201) of the second shaping unit (22) is arranged to abut against a second panel (221) of the second wall (303), one side of the second panel (221) towards the second wall (303) is matched with the shape of the second wall (303), and the second shaping unit (22) is configured to drive the second panel (221) to act in a second direction (T2) to abut against the second wall (303), and the second direction (T2) is arranged at a non-parallel included angle with a normal line (L1) perpendicular to the inclined wall (3031).

7. The foamed shaping mold (100) of a press chamber according to claim 6, characterized in that The driving assembly (202) of the second shaping unit (22) includes: A second cylinder (222) is mounted on the base (10); A slider (223) is driven by the output end of the second cylinder (222) to reciprocate in a fourth direction (T4), and the second direction (T2) is arranged at a non-parallel included angle with the fourth direction (T4); A second transmission assembly (224) is connected between the slider (223) and the second panel (221), and is used for converting the movement of the slider (223) in the fourth direction (T4) into the movement of the second panel (221) in the second direction (T2); A second guide mechanism (225) is arranged between the base (10) and the second panel (221), and is configured to limit the movement of the second panel (221) along the second direction (T2).

8. The foamed shaping mold (100) of a press chamber according to claim 7, characterized in that The second transmission assembly (224) comprises: A driving seat (2241) is fixedly installed on the sliding block (223), and an inclined guide groove (2242) is formed in the driving seat (2241), the inclined guide groove (2242) has a preset inclination angle relative to the fourth direction (T4); A driven connecting block (2243) is fixedly connected to the second panel (221) away from the second wall (303); A guide shaft (2244) is arranged on the driven connecting block (2243), and the guide shaft (2244) is slidingly fitted in the inclined guide groove (2242); When the sliding block (223) drives the driving seat (2241) to move along the fourth direction (T4), the inner wall of the inclined guide groove (2242) extrudes the guide shaft (2244), so as to drive the driven connecting block (2243) and the second panel (221) to move along the second direction (T2).

9. The foaming shaping mold (100) of a press chamber according to claim 1, characterized in that, The driving assembly (202) comprises a control valve configured to allow the movable panel (201) to maintain a constant pressure on the inner wall (304) of the press chamber (300) during the foaming process to adapt to the stress change generated by foaming.

10. A refrigerator cabinet foaming apparatus characterized by, A foaming shaping mold (100) comprising the press chamber according to any one of claims 1 to 9.

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