In-bin pressure differential coating apparatus

Abstract

The application provides a warehouse-in-warehouse type pressure differential coating device, which comprises a rack, an inner warehouse body, a product carrier, a diaphragm positioning element, a first lifting driving mechanism, an outer warehouse body and a second lifting driving mechanism; the inner warehouse body comprises a base and a side wall, the base is arranged on the rack, and an inner warehouse space with an upward opening is formed between the base and the side wall; the product carrier is located in the inner warehouse space; the diaphragm positioning element is arranged in the inner warehouse space, and the periphery of the diaphragm positioning element is sealingly connected with the side wall; the first lifting driving mechanism is arranged on the rack and connected to the bottom of the diaphragm positioning element; the outer warehouse body has an outer warehouse space with a downward opening; and the second lifting driving mechanism is arranged on the rack and connected with the outer warehouse body. The warehouse-in-warehouse type pressure differential coating device can save the height of the occupied factory building and effectively coat different products.

Description

Technical Field

[0001] This invention relates to the field of differential pressure coating technology, and more particularly to a bin-in-bin type differential pressure coating device. Background Technology

[0002] Differential pressure coating is a 3D surface decoration process that achieves higher quality appearance. It uses vacuum atmospheric pressure to coat the product, and by applying different film effects, it can replicate the surface effects of various materials, such as wood grain, leather, carbon fiber, and paper / cloth textures. Currently, existing differential pressure coating machines have the following problems: First, the machines are large. When the upper and lower mold components are closed, the bottom of the upper mold component and the top of the lower mold component are joined and sealed, resulting in a height that is the sum of the heights of the upper and lower mold components, thus occupying a significant amount of factory space. Second, when differential pressure coating machines use a method where the film moves downwards to coat different products, the shape of the coating surface varies. Some products are flat, while others are concave. When coating flat products, the film is impacted during downward movement and becomes concave, preventing the film from effectively and tightly adhering to the product. This results in wrinkles or bubbles in some areas after coating, leading to product quality issues.

[0003] Therefore, it is necessary to provide a warehouse-within-a-warehouse differential pressure coating device that can save on factory height and effectively coat different products. Summary of the Invention

[0004] The purpose of this invention is to provide a warehouse-within-a-warehouse differential pressure coating device that can save on factory height and effectively coat different products.

[0005] To achieve the above objectives, the present invention provides a chamber-within-a-chamber differential pressure coating device, comprising a frame, an inner chamber, a product carrier, a diaphragm positioning component, a first lifting drive mechanism, an outer chamber, and a second lifting drive mechanism; the inner chamber includes a base and side enclosures, the base being mounted on the frame, and a plurality of side enclosures being sequentially connected end-to-end along the same circumferential direction and arranged on the base, forming an upward-opening inner chamber space between the base and the side enclosures; the product carrier is mounted on the base and located within the inner chamber space, and is used to carry the product; the diaphragm positioning component has a hollow structure, is located within the inner chamber space and above the product carrier, and the diaphragm positioning component is hollow. The four sides of the positioning component are sealed and connected to the side enclosure. The upper part of the diaphragm positioning component is used to position the diaphragm. The first lifting drive mechanism is disposed on the frame and passes through the inner compartment space and is connected to the bottom of the diaphragm positioning component. The first lifting drive mechanism is used to drive the diaphragm positioning component to lift. The outer compartment is movably disposed on the frame and located above the inner compartment. The outer compartment has an opening facing downward. The second lifting drive mechanism is disposed on the frame and connected to the outer compartment. The second lifting drive mechanism drives the outer compartment to descend, so that the outer compartment closes with the base and the side enclosure is located in the outer compartment space.

[0006] Preferably, the first lifting drive mechanism includes a lifting drive assembly and a lifting frame. The lifting drive assembly is disposed on the frame. The bottom of the lifting frame is connected to the lifting drive assembly, and the upper part of the lifting frame passes through the inner compartment space and is connected to the bottom of the diaphragm positioning member.

[0007] Preferably, the lifting drive assembly includes a first rotation drive mechanism, a first connecting rod, and a second connecting rod. The first rotation drive mechanism is mounted on the frame. The output end of the first rotation drive mechanism is connected to one end of the first connecting rod. The other end of the first connecting rod is pivotally connected to one end of the second connecting rod. The other end of the second connecting rod is pivotally connected to the bottom of the lifting frame. The first rotation drive mechanism drives the first connecting rod to rotate, thereby causing the lifting frame to rise or fall via the second connecting rod.

[0008] Preferably, the second lifting drive mechanism includes a second rotation drive mechanism, a third link, and a fourth link. The second rotation drive mechanism is mounted on the frame. The output end of the second rotation drive mechanism is connected to one end of the third link, and the other end of the third link is pivotally connected to one end of the fourth link. The other end of the fourth link is pivotally connected to the outer chamber. The second rotation drive mechanism drives the third link to rotate, thereby causing the outer chamber to descend or rise through the fourth link, so that the outer chamber can be molded or separated from the base.

[0009] Preferably, the chamber-in-chamber differential pressure covering device further includes a pressure plate, which has a hollow structure and is movably mounted on the outer chamber body. The pressure plate is arranged within the outer chamber space and is used to press down the diaphragm on the diaphragm positioning member.

[0010] Preferably, the chamber-in-chamber differential pressure covering device further includes a downward pressure driving mechanism, which is disposed on the outer chamber body, and the output end of the downward pressure driving mechanism passes through the outer chamber space and is connected to the pressure plate; the pressure plate is driven to descend by the downward pressure driving mechanism, so that the pressure plate presses down on the diaphragm positioning member and pushes the diaphragm positioning member and the diaphragm together to descend.

[0011] Preferably, the chamber-in-chamber differential pressure covering device further includes a first locking part and a second locking part, the first locking part being disposed on the outer chamber body and the second locking part being disposed on the base; when the outer chamber body and the base are molded together, the first locking part and the second locking part are used to lock or release the outer chamber body onto the base.

[0012] Preferably, the first locking part includes a locking lateral movement drive mechanism, a locking slide plate, and a first locking protrusion. The locking lateral movement drive mechanism is disposed on the outer side wall of the outer compartment, and the output end of the locking lateral movement drive mechanism is connected to the locking slide plate. A plurality of first locking protrusions are disposed at intervals along the horizontal direction on the locking slide plate. The second locking part includes a locking support plate and a second locking protrusion. The locking support plate is disposed on the base and located outside the side enclosure. A plurality of second locking protrusions are disposed at intervals along the horizontal direction on the locking support plate, and the second locking protrusions are staggered from the first locking protrusions. When the outer compartment and the base are molded together, the first locking protrusions pass through the gap between two adjacent second locking protrusions, and the locking slide plate is driven to move laterally by the locking lateral movement drive mechanism, so that the upper part of the first locking protrusion abuts against the bottom of the second locking protrusion.

[0013] Preferably, the chamber-in-chamber differential pressure covering device further includes a third lifting drive mechanism, which is mounted on the frame. The output end of the third lifting drive mechanism passes through the inner chamber space and is connected to the bottom of the product carrier. The third lifting drive mechanism is used to drive the product carrier to lift.

[0014] Preferably, the silo-within-silo differential pressure covering device further includes an infeed / outfeed lateral movement drive mechanism and an infeed / outfeed lateral movement support. The infeed / outfeed lateral movement drive mechanism is mounted on the frame, and the infeed / outfeed lateral movement support is slidably mounted on the frame. The infeed / outfeed lateral movement drive mechanism is connected to the infeed / outfeed lateral movement support. The inner silo and the first lifting drive mechanism are respectively mounted on the infeed / outfeed lateral movement support. The infeed / outfeed lateral movement drive mechanism drives the infeed / outfeed lateral movement support to move laterally, thereby moving the inner silo directly below the outer silo, or moving the inner silo relative to the outer silo to offset it.

[0015] Compared with existing technologies, the chamber-within-a-chamber differential pressure coating device of the present invention uses a diaphragm positioning component sealed within the inner chamber space of the inner chamber. This diaphragm positioning component positions the diaphragm and simultaneously seals the upper opening of the inner chamber, thus creating a sealed space within the inner chamber. After the outer chamber is lowered by the second lifting drive mechanism, the outer chamber and the base of the inner chamber close together, placing the inner chamber space within the outer chamber space, forming a chamber-within-a-chamber structure. This reduces the height after the outer and inner chambers are closed, thereby saving on factory height. Furthermore, due to the chamber-within-a-chamber structure, the vacuum levels of the inner chamber space and the outer chamber space can be independently controlled. The pressure difference between the inner and outer chamber spaces controls the shape of the diaphragm located between them to accommodate products with different concavities and convexities, ensuring that the diaphragm adheres effectively and tightly to the product, avoiding wrinkles or bubbles during coating and guaranteeing product quality. Therefore, the warehouse-within-a-warehouse differential pressure coating equipment of the present invention can save the height of the factory building and can effectively coat different products. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the product carrier after the product is placed in the warehouse-type differential pressure covering device of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the diaphragm after it has been placed in the diaphragm positioning component of the chamber-type differential pressure coating device of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the inner and outer chambers of the chamber-in-chamber differential pressure covering device of the present invention when they are molded together.

[0019] Figure 4This is a partial structural diagram of the inner and outer chambers of the chamber-in-chamber differential pressure covering device of the present invention when they are molded together.

[0020] Figure 5 This is a partial structural diagram of the chamber-in-chamber differential pressure coating device of the present invention after the pressure plate drives the diaphragm to move downward.

[0021] Figure 6 This is a structural diagram of the diaphragm positioning component and the first lifting drive mechanism of the silo-in-silo differential pressure covering device of the present invention.

[0022] Figure 7 This is a structural diagram of the product carrier and the third lifting drive mechanism of the warehouse-in-warehouse differential pressure covering device of the present invention.

[0023] Figure 8 This is a structural diagram of the second lifting drive mechanism of the warehouse-within-a-warehouse differential pressure covering device of the present invention.

[0024] Figure 9 This is a structural diagram of the first locking part of the silo-within-a-silo differential pressure covering device of the present invention.

[0025] Figure 10 This is a structural diagram showing the first locking protrusion of the first locking part of the first locking part of the silo-in-silo differential pressure covering device of the present invention abutting and locking with the second locking protrusion of the second locking part. Detailed Implementation

[0026] To illustrate the technical content and structural features of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0027] Please see Figures 1 to 5The chamber-within-a-chamber differential pressure coating device 100 of the present invention includes a frame 1, an inner chamber 2, a product carrier 31, a diaphragm positioning component 32, a first lifting drive mechanism 4, an outer chamber 5, and a second lifting drive mechanism 6. The inner chamber 2 includes a base 21 and side enclosures 22. The base 21 is mounted on the frame 1, and several side enclosures 22 are arranged sequentially end-to-end along the same circumferential direction on the base 21. An inner chamber space 23 with an upward opening is enclosed between the base 21 and the side enclosures 22. The product carrier 31 is mounted on the base 21 and located within the inner chamber space 23. The product carrier 31 is used to carry the product 200. The diaphragm positioning component 32 has a hollow structure and is located within the inner chamber space 23 and above the product carrier 31. The diaphragm positioning component 32 is sealed to the side enclosure 22 on all four sides, and the upper part of the diaphragm positioning component 32 is used to position the diaphragm 300. The first lifting drive mechanism 4 is set on the frame 1 and passes through the inner compartment space 23 and is connected to the bottom of the diaphragm positioning component 32. The first lifting drive mechanism 4 is used to drive the diaphragm positioning component 32 to rise and fall. The outer compartment 5 is movably set on the frame 1 and is located above the inner compartment 2. The outer compartment 5 has an outer compartment space 51 with an opening facing downward. The second lifting drive mechanism 6 is set on the frame 1 and connected to the outer compartment 5. The second lifting drive mechanism 6 drives the outer compartment 5 to fall, so that the outer compartment 5 and the base 21 are closed and the side enclosure 22 is located in the outer compartment space 51. The diaphragm positioning component 32 can be sealed to the side enclosure 22 with a sealing strip on all four sides.

[0028] The chamber-within-a-chamber differential pressure coating device 100 of the present invention has a diaphragm positioning member 32 sealed and connected in the inner chamber space 23 of the inner chamber body 2. The diaphragm positioning member 32 is used to position the diaphragm 300, and the positioned diaphragm 300 is used to close the upper opening of the inner chamber body 2, thereby making the inner chamber space 23 a sealed space. After the second lifting drive mechanism 6 drives the outer chamber body 5 to descend, the outer chamber body 5 and the base 21 of the inner chamber body 2 are closed, so that the inner chamber space 23 is located in the outer chamber space 51, forming a chamber-within-a-chamber structure. The outer chamber 5 can be equipped with a heating unit for heating and softening the diaphragm 300 within its outer chamber space 51. The chamber-in-chamber differential pressure coating device 100 of this invention can also be equipped with a vacuuming device and a high-pressure gas supply device. Multiple vacuuming pipes of the vacuuming device are respectively connected to the outer chamber space 51 of the outer chamber 5 and the inner chamber space 23 of the inner chamber 2, so as to respectively evacuate the outer chamber space 51 of the outer chamber 5 and the inner chamber space 23 of the inner chamber 2. Furthermore, the high-pressure gas supply device can be connected to the outer chamber space 51 of the outer chamber 5, so that when the diaphragm 300 is coated onto the product 200, high-pressure gas is introduced through the outer chamber space 51 of the outer chamber 5, making the diaphragm 300 adhere more tightly to the product 200.

[0029] Please see Figure 4 and Figure 6 In this embodiment, the first lifting drive mechanism 4 includes a lifting drive assembly 41 and a lifting frame 42. The lifting drive assembly 41 is mounted on the frame 1. The bottom of the lifting frame 42 is connected to the lifting drive assembly 41, and the upper part of the lifting frame 42 is inserted into the inner compartment space 23 and connected to the bottom of the diaphragm positioning member 32. Specifically, the lifting drive assembly 41 includes a first rotation drive mechanism 411, a first connecting rod 412, and a second connecting rod 413. The first rotation drive mechanism 411 is mounted on the frame 1. The output end of the first rotation drive mechanism 411 is connected to one end of the first connecting rod 412, and the other end of the first connecting rod 412 is pivotally connected to one end of the second connecting rod 413. The other end of the second connecting rod 413 is pivotally connected to the bottom of the lifting frame 42. The first rotation drive mechanism 411 drives the first connecting rod 412 to rotate, thereby driving the lifting frame 42 to rise or fall via the second connecting rod 413. In one embodiment, the driving force and supporting force on the lifting frame 42 and the diaphragm positioning member 32 can be disconnected by the lifting drive assembly 41, so that the diaphragm positioning member 32 and the lifting frame 42 can slide down under their own weight, thereby driving the diaphragm 300 located on the diaphragm positioning member 32 to move down, so that the diaphragm 300 can adhere to the product 200 on the product carrier 31 and perform the covering work. However, this is not a limitation. For example, in other feasible embodiments, the diaphragm positioning member 32 and the lifting frame 42 can also be driven down together by the first lifting drive mechanism 4, thereby driving the diaphragm 300 to move down for the covering work.

[0030] Please see Figure 4 and Figure 8 In this embodiment, the second lifting drive mechanism 6 includes a second rotation drive mechanism 61, a third connecting rod 62, and a fourth connecting rod 63. The second rotation drive mechanism 61 is mounted on the frame 1. The output end of the second rotation drive mechanism 61 is connected to one end of the third connecting rod 62, and the other end of the third connecting rod 62 is pivotally connected to one end of the fourth connecting rod 63. The other end of the fourth connecting rod 63 is pivotally connected to the outer chamber 5. The second rotation drive mechanism 61 drives the third connecting rod 62 to rotate, thereby causing the outer chamber 5 to descend or rise through the fourth connecting rod 63, so that the outer chamber 5 closes or separates from the base 21. Specifically, the frame 1 is provided with a guide rod 11 arranged along the vertical movement direction of the outer chamber 5, and the outer chamber 5 slides on the guide rod 11.

[0031] Please see Figure 4 and Figure 5In one embodiment, the chamber-within-a-chamber differential pressure coating device 100 of the present invention further includes a pressure plate 71. The pressure plate 71 has a hollow structure and is movably mounted on the outer chamber 5. The pressure plate 71 is arranged within the outer chamber space 51 and is used to press down the diaphragm 300 on the diaphragm positioning member 32. When the outer chamber 5 and the base 21 are molded together, the pressure plate 71 can be used to press down the diaphragm 300 on the diaphragm positioning member 32. The driving force and supporting force on the lifting frame 42 and the diaphragm positioning member 32 are disconnected by the lifting drive assembly 41, so that the diaphragm positioning member 32 and the diaphragm 300 move downward under the pressure of the pressure plate 71 and the weight of the diaphragm positioning member 32 itself, thereby allowing the diaphragm 300 to be coated on the product 200. Furthermore, in one embodiment, the chamber-within-a-chamber differential pressure coating device 100 of the present invention further includes a downward pressure drive mechanism 72. The downward pressure drive mechanism 72 is disposed on the outer chamber body 5, and the output end of the downward pressure drive mechanism 72 passes through the outer chamber space 51 and is connected to the pressure plate 71. The downward pressure drive mechanism 72 drives the pressure plate 71 to descend, so that the pressure plate 71 presses down on the diaphragm positioning member 32 and pushes the diaphragm positioning member 32 and the diaphragm 300 down together. When the outer chamber body 5 and the base 21 are molded together, the driving force and supporting force on the lifting frame 42 and the diaphragm positioning member 32 are disconnected by the lifting drive assembly 41, and the downward pressure drive mechanism 72 drives the pressure plate 71 to descend, so that the pressure plate 71 presses down on the diaphragm positioning member 300 and pushes the diaphragm positioning member 32 and the diaphragm 300 down together, thereby causing the diaphragm 300 to be coated on the product 200. By setting the downward drive mechanism 72, it can be ensured that the diaphragm 300 can completely cover the product 200 after it descends.

[0032] Please see Figure 1 , Figure 3 , Figure 9 and Figure 10 In this embodiment, the chamber-in-chamber differential pressure covering device 100 of the present invention further includes a first locking part 81 and a second locking part 82. The first locking part 81 is disposed on the outer chamber body 5, and the second locking part 82 is disposed on the base 21. When the outer chamber body 5 and the base 21 are molded together, the first locking part 81 and the second locking part 82 are used to lock or release the outer chamber body 5 onto the base 21.

[0033] Specifically, the first locking part 81 includes a locking lateral movement drive mechanism 811, a locking slide plate 812, and a first locking protrusion 813. The locking lateral movement drive mechanism 811 is disposed on the outer side wall of the outer compartment 5, and the output end of the locking lateral movement drive mechanism 811 is connected to the locking slide plate 812. A plurality of first locking protrusions 813 are arranged at intervals along the horizontal direction on the locking slide plate 812. The second locking part 82 includes a locking support plate 821 and a second locking protrusion 822. The locking support plate 821 is disposed on the base 21 and located on the side enclosure 22. On the outer side, several second locking protrusions 822 are arranged at intervals along the horizontal direction on the locking support plate 821, and the second locking protrusions 822 and the first locking protrusions 813 are staggered. When the outer compartment 5 and the base 21 are molded together, the first locking protrusion 813 passes through the gap between two adjacent second locking protrusions 822, and the locking slide plate 812 is driven to move laterally by the locking transverse drive mechanism 811, so that the upper part of the first locking protrusion 813 abuts against the bottom of the second locking protrusion 822, thereby locking the outer compartment 5 onto the base 21. When it is necessary for the outer compartment 5 to separate from the inner compartment 2, the locking slide plate 812 is driven to move laterally and reset by the locking lateral drive mechanism 811, so as to drive the first locking protrusion 813 to disengage from the second locking protrusion 822, thereby releasing the outer compartment 5 from the base 21. Then, the outer compartment 5 is driven to rise by the second lifting drive mechanism 6, thereby separating the outer compartment 5 from the inner compartment 2. During this process, the first locking protrusion 813 passes through the gap between two adjacent second locking protrusions 822 and is located above the second locking protrusion 822.

[0034] More specifically, the upper part of the first locking protrusion 813 is provided with a first inclined surface 813a, and the bottom of the second locking protrusion 822 is provided with a second inclined surface 822a. The locking slide plate 812 is driven to move laterally by the locking lateral movement drive mechanism 811, so that the first inclined surface 813a abuts against the second inclined surface 822a.

[0035] Please see Figure 4 and Figure 7In this embodiment, the chamber-within-a-chamber differential pressure coating device 100 of the present invention further includes a third lifting drive mechanism 311. The third lifting drive mechanism 311 is disposed on the frame 1, and its output end passes through the inner chamber space 23 and is connected to the bottom of the product carrier 31. The third lifting drive mechanism 311 is used to drive the product carrier 31 to lift. When placing the product 200 that needs to be coated with the film 300 onto the product carrier 31, the third lifting drive mechanism 311 can first drive the product carrier 31 to rise to a higher position so that the product 200 can be placed on the product carrier 31. After the product 200 is placed on the product carrier 31, the third lifting drive mechanism 311 can drive the product carrier 31 to descend to the bottom of the inner chamber 2 so that the film 300 can be placed on the film positioning member 32, avoiding the position of the product 200 from affecting the operation. The third lifting drive mechanism 311 can employ multiple screw modules arranged at the bottom of the product carrier 31, and is equipped with a motor, a drive wheel, a timing belt, and a driven wheel. The motor is connected to the drive wheel, and the driven wheel is set on the screw component of the screw module. The timing belt is wound around the drive wheel and the driven wheel. The motor drives the drive wheel to rotate, which in turn drives the driven wheel to rotate through the timing belt. This causes the driven wheel to drive the screw of the screw module to rotate, and the ball bearings of the screw module drive the product carrier 31 to lift and lower. However, the structure of the third lifting drive mechanism 311 is not limited to this. For example, the third lifting drive mechanism 311 can also directly adopt existing cylinders or linear drive modules, etc.

[0036] Please see Figures 1 to 3 In this embodiment, the silo-within-silo differential pressure coating device 100 of the present invention further includes an infeed / outfeed lateral movement drive mechanism 91 and an infeed / outfeed lateral movement bracket 92. The infeed / outfeed lateral movement drive mechanism 91 is disposed on the frame 1, and the infeed / outfeed lateral movement bracket 92 is slidably disposed on the frame 1. The infeed / outfeed lateral movement drive mechanism 91 drives the infeed / outfeed lateral movement bracket 92 to move laterally, thereby moving the inner silo 2 to directly below the outer silo 5, or moving the inner silo 2 relative to the outer silo 5 to offset it. When the inner silo 2 moves to directly below the outer silo 5, the second lifting drive mechanism 6 drives the outer silo 5 to descend, so that the outer silo 5 and the base 21 are closed. The feeding / discharging transverse movement drive mechanism 91 can use an existing motor-driven lead screw module to drive the feeding / discharging transverse movement bracket 92 to move laterally, but it is not limited to this. For example, the feeding / discharging transverse movement drive mechanism 91 can also use an existing telescopic cylinder or linear drive module. Specifically, a transverse movement slide rail is provided on the frame 1, and the feeding / discharging transverse movement bracket 92 slides on the transverse movement slide rail.

[0037] In the first lifting drive mechanism 4, there are two first links 412 and two second links 413. The two first links 412 are pivotally connected at intervals to the infeed / outfeed transverse support 92. The first rotation drive mechanism 411 is connected to one end of one of the first links 412. A first connecting shaft connects the other ends of the two first links 412. One end of each of the two second links 413 is pivotally connected at intervals to the first connecting shaft. The other ends of each of the two second links 413 are pivotally connected to the lifting frame 42, but the number of first links 412 and second links 413 is not limited to this. In addition, the second lifting drive mechanism 6 has two third links and two fourth links 63. The second rotation drive mechanism 61 is connected to one end of one of the third links 62. A second connecting shaft connects the other ends of the two third links 62. One end of each of the two fourth links 63 is pivotally connected at intervals to the second connecting shaft. The other ends of each of the two fourth links 63 are pivotally connected to the outer chamber 5. However, the number of third link 62 and fourth link 63 is not limited to this. For example, the number of third link 62 and fourth link 63 can be one or three, etc.

[0038] Combination Figures 1 to 10 The working principle of the warehouse-within-a-warehouse differential pressure covering device 100 of the present invention is as follows:

[0039] First, the product carrier 31 is raised to a higher position by the third lifting drive mechanism 311, and the product 200 is placed on the product carrier 31. Then, the product carrier 31 is lowered to the bottom of the inner chamber 2 by the third lifting drive mechanism 311, and the diaphragm 300 is placed on the diaphragm positioning member 32. The diaphragm 300 is positioned by the diaphragm positioning member 32, or it can be positioned by adsorption through the holes of the diaphragm positioning member 32. The infeed / outfeed transverse drive mechanism 91 drives the infeed / outfeed transverse support 92 to move the inner chamber 2 to directly below the outer chamber 5. The second lifting drive mechanism 6 drives the outer chamber 5 to descend, so that the outer chamber 5 and the base 21 of the inner chamber 2 are closed, so that the inner chamber space 23 is located in the outer chamber space 51, forming a chamber-within-a-chamber structure. The first locking part 81 on the outer chamber 5 locks with the second locking part 82 on the inner chamber 2, thereby locking or releasing the outer chamber 5 onto the base 21. By evacuating the outer chamber space 51 and the inner chamber space 23, and heating the outer chamber space 51, the diaphragm 300 is softened to a coatable state. The pressure plate 71 presses down on the diaphragm 300 on the diaphragm positioning member 32. The lifting drive assembly 41 disconnects the driving and supporting forces on the lifting frame 42 and the diaphragm positioning member 32, and the pressing drive mechanism 72 drives the pressure plate 71 to descend. This causes the pressure plate 71 to press down on the diaphragm 300 on the diaphragm positioning member 32 and push the diaphragm positioning member 32 and the diaphragm 300 down together, thus allowing the diaphragm 300 to adhere to the product 200. High-pressure gas is then injected into the outer chamber space 51 of the outer chamber body 5, causing the diaphragm 300 to quickly coat the surface of the workpiece under high-pressure gas without generating air bubbles.

[0040] In summary, the chamber-within-a-chamber differential pressure coating device 100 of the present invention uses a diaphragm positioning member 32 sealed within the inner chamber space 23 of the inner chamber 2 to position the diaphragm 300. Simultaneously, the positioned diaphragm 300 seals the upper opening of the inner chamber 2, thus creating a sealed space within the inner chamber space 23. After the second lifting drive mechanism 6 drives the outer chamber 5 to descend, the outer chamber 5 and the base 21 of the inner chamber 2 close together, placing the inner chamber space 23 within the outer chamber space 51, forming a chamber-within-a-chamber structure, thereby reducing external pressure. The height of the inner chamber 5 after molding with the inner chamber 2 is reduced, thus saving on factory height. Furthermore, due to the chamber-within-a-chamber structure, the vacuum levels of the inner chamber space 23 and the outer chamber space 51 of the outer chamber 5 can be independently controlled. The pressure difference between the inner chamber space 23 and the outer chamber space 51 controls the shape of the diaphragm 300 located between them, adapting to products 200 with varying contours. This ensures the diaphragm 300 adheres effectively and tightly to the product 200, preventing wrinkles or bubbles during lamination and guaranteeing product quality. Therefore, the chamber-within-a-chamber pressure differential lamination device 100 of this invention saves on factory height and can effectively laminate different products 200.

[0041] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are within the scope of the present invention.

Claims

1. A warehouse-within-a-warehouse differential pressure covering device, characterized in that, The system includes a frame, an inner compartment, a product carrier, a diaphragm positioning component, a first lifting drive mechanism, an outer compartment, and a second lifting drive mechanism. The inner compartment includes a base and side enclosures. The base is mounted on the frame, and several side enclosures are arranged sequentially end-to-end along the same circumferential direction on the base, forming an upward-opening inner compartment space between the base and the side enclosures. The product carrier is mounted on the base and located within the inner compartment space, and is used to carry the product. The diaphragm positioning component has a hollow structure, is located within the inner compartment space and above the product carrier, and is sealed to the side enclosures on all sides. The diaphragm positioning member is connected to the frame, with its upper part used for positioning the diaphragm. The first lifting drive mechanism is mounted on the frame and passes through the inner compartment space and is connected to the bottom of the diaphragm positioning member. The first lifting drive mechanism is used to drive the diaphragm positioning member to lift. The outer compartment is movably mounted on the frame and located above the inner compartment. The outer compartment has a downward-facing outer compartment space. The second lifting drive mechanism is mounted on the frame and connected to the outer compartment. The second lifting drive mechanism drives the outer compartment to descend, so that the outer compartment closes with the base and the side enclosure is located within the outer compartment space.

2. The warehouse-within-a-warehouse differential pressure covering device according to claim 1, characterized in that, The first lifting drive mechanism includes a lifting drive assembly and a lifting frame. The lifting drive assembly is mounted on the frame. The bottom of the lifting frame is connected to the lifting drive assembly. The upper part of the lifting frame passes through the inner compartment space and is connected to the bottom of the diaphragm positioning component.

3. The warehouse-within-a-warehouse differential pressure covering device according to claim 2, characterized in that, The lifting drive assembly includes a first rotation drive mechanism, a first connecting rod, and a second connecting rod. The first rotation drive mechanism is mounted on the frame. The output end of the first rotation drive mechanism is connected to one end of the first connecting rod. The other end of the first connecting rod is pivotally connected to one end of the second connecting rod. The other end of the second connecting rod is pivotally connected to the bottom of the lifting frame. The first rotation drive mechanism drives the first connecting rod to rotate, thereby causing the lifting frame to rise or fall via the second connecting rod.

4. The warehouse-within-a-warehouse differential pressure covering device according to claim 1, characterized in that, The second lifting drive mechanism includes a second rotation drive mechanism, a third link, and a fourth link. The second rotation drive mechanism is mounted on the frame. The output end of the second rotation drive mechanism is connected to one end of the third link, and the other end of the third link is pivotally connected to one end of the fourth link. The other end of the fourth link is pivotally connected to the outer chamber. The second rotation drive mechanism drives the third link to rotate, thereby causing the outer chamber to descend or rise through the fourth link, so that the outer chamber can be molded or separated from the base.

5. The warehouse-within-a-warehouse differential pressure covering device according to claim 1, characterized in that, It also includes a pressure plate, which has a hollow structure and is movably mounted on the outer chamber body. The pressure plate is arranged within the outer chamber space and is used to press down the diaphragm on the diaphragm positioning member.

6. The silo-within-a-silo differential pressure covering device according to claim 5, characterized in that, It also includes a pressure drive mechanism, which is disposed on the outer chamber body and the output end of the pressure drive mechanism passes through the outer chamber space and is connected to the pressure plate; the pressure plate is driven to descend by the pressure drive mechanism, so that the pressure plate presses down on the diaphragm positioning member and pushes the diaphragm positioning member and the diaphragm together to descend.

7. The warehouse-within-a-warehouse differential pressure covering device according to claim 1, characterized in that, It also includes a first locking part and a second locking part, the first locking part being disposed on the outer chamber body and the second locking part being disposed on the base; when the outer chamber body and the base are molded together, the first locking part and the second locking part are used to lock or release the outer chamber body onto the base.

8. The silo-within-a-silo differential pressure covering device according to claim 7, characterized in that, The first locking part includes a locking lateral movement drive mechanism, a locking slide plate, and a first locking protrusion. The locking lateral movement drive mechanism is disposed on the outer side wall of the outer compartment, and its output end is connected to the locking slide plate. A plurality of first locking protrusions are disposed at intervals along the horizontal direction on the locking slide plate. The second locking part includes a locking support plate and a second locking protrusion. The locking support plate is disposed on the base and located outside the side enclosure. A plurality of second locking protrusions are disposed at intervals along the horizontal direction on the locking support plate, and the second locking protrusions are staggered from the first locking protrusions. When the outer compartment and the base are molded together, the first locking protrusions pass through the gap between two adjacent second locking protrusions, and the locking slide plate is driven to move laterally by the locking lateral movement drive mechanism, so that the upper part of the first locking protrusion abuts against the bottom of the second locking protrusion.

9. The silo-within-a-silo differential pressure covering device according to claim 1, characterized in that, It also includes a third lifting drive mechanism, which is mounted on the frame. The output end of the third lifting drive mechanism passes through the inner compartment space and is connected to the bottom of the product carrier. The third lifting drive mechanism is used to drive the product carrier to lift.

10. The silo-within-a-silo differential pressure covering device according to claim 1, characterized in that, It also includes an infeed / outfeed lateral movement drive mechanism and an infeed / outfeed lateral movement bracket. The infeed / outfeed lateral movement drive mechanism is disposed on the frame, and the infeed / outfeed lateral movement bracket is slidably disposed on the frame. The infeed / outfeed lateral movement drive mechanism is connected to the infeed / outfeed lateral movement bracket. The inner chamber and the first lifting drive mechanism are respectively disposed on the infeed / outfeed lateral movement bracket. The infeed / outfeed lateral movement drive mechanism drives the infeed / outfeed lateral movement bracket to move laterally, thereby moving the inner chamber to directly below the outer chamber, or moving the inner chamber relative to the outer chamber to offset it.

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