A negative pressure encapsulation device for aluminum electrolytic capacitors

Abstract

The present invention discloses a negative pressure encapsulation device for aluminum electrolytic capacitors, which includes a feeding device, an encapsulation device, a first pressing device and a conveying device. The feeding device is used to output the outer shell, the element core and the sealing body one by one. The encapsulation device is used to encapsulate and combine the outer shell, the element core and the sealing body output by the feeding device under negative pressure, so that the sealing body is at a first depth in the outer shell. The first pressing device is used to press the outer shell, the element core and the sealing body processed by the encapsulation device under negative pressure, so that the sealing body is at a second depth. The second depth is closer to the bottom end of the outer shell relative to the first depth. The conveying device is used to convey the element core, the sealing body and the outer shell between the feeding device, the encapsulation device and the first pressing device. This negative pressure encapsulation device can avoid overheating of the friction surface of the sealing body and generate fine melting, and can ensure that the outer diameter of the sealing body will not shrink, thereby ensuring the airtightness between the outer shell and the sealing body.

Description

Technical Field

[0001] The present invention relates to the technical field of capacitors, and particularly to a negative pressure encapsulation device for aluminum electrolytic capacitors. Background Art

[0002] At present, traditional capacitors are all encapsulated under normal pressure, but encapsulating capacitors under normal pressure will reduce the service life of the products and cannot be adapted for use in today's electronic products. In the actual production of aluminum electrolytic capacitors, since the outer diameter of the sealing body is larger than the inner diameter of the outer shell opening, when the sealing body is squeezed into the outer shell opening, the sealing body has a large tension, so that the sealing body is squeezed against the inner wall of the outer shell opening and there is a large frictional force. In the prior art, the sealing body is squeezed into the outer shell opening at one time, so that the sliding distance of the sealing body on the inner wall of the outer shell opening is too long, and a large amount of heat is generated by the friction between the inner wall of the outer shell opening and the sealing body, resulting in slight melting of the friction surface of the sealing body, causing the outer diameter of the sealing body to shrink, affecting the airtightness between the outer shell and the sealing body, and an aluminum electrolytic capacitor with high external airtightness and internal negative pressure cannot be obtained. Summary of the Invention

[0003] Based on this, it is necessary to provide a negative pressure encapsulation device for aluminum electrolytic capacitors to solve the technical problem in the prior art that the airtightness between the outer shell and the sealing body is affected due to the shrinkage of the outer diameter of the sealing body.

[0004] A negative pressure encapsulation device for aluminum electrolytic capacitors provided by the present invention includes:

[0005] A feeding device for outputting the outer shell, the element core and the sealing body one by one;

[0006] An encapsulation device for encapsulating and combining the outer shell, the element core and the sealing body output by the feeding device under negative pressure so that the sealing body is at a first depth in the outer shell;

[0007] A first pressing device for pressing the outer shell, the element core and the sealing body processed by the encapsulation device under negative pressure so that the sealing body is at a second depth in the outer shell, and the second depth is closer to the bottom end of the outer shell than the first depth; and

[0008] A conveying device for conveying the element core, the sealing body and the outer shell between the feeding device, the encapsulation device and the first pressing device.

[0009] Further, the negative pressure encapsulation device further includes a second pressing device, which is used to press the shell, the element core, and the sealing body processed by the first pressing device in a negative pressure state, so that the sealing body is at a third depth of the shell, and the third depth is closer to the bottom end of the shell than the second depth.

[0010] Further, the feeding device includes a first feeding mechanism and a second feeding mechanism. The first feeding mechanism is used to output the shells one by one, and the second feeding mechanism is used to output the element cores and the sealing bodies one by one.

[0011] Further, the first feeding mechanism includes a vibrating disk and an output mechanism. The vibrating disk is connected to the output mechanism. The vibrating disk is used to convey the shells to the output mechanism one by one, and the output mechanism is used to output the shells conveyed by the vibrating disk to the conveying device.

[0012] Further, the output mechanism includes a conveying member and a ejector rod. The conveying member is connected to the vibrating disk. The ejector rod can move in a direction close to or away from the conveying member, and drive the shell on the conveying member into the conveying device.

[0013] Further, the second feeding mechanism includes a support member and a rotating member. The rotating member can carry the element core and the sealing body. The rotating member is rotatably arranged on the support member and drives the element core and the sealing body to move in a direction close to the conveying device, so as to output the element core and the sealing body one by one.

[0014] Further, the conveying device includes a rotating disk, a receiving component, and a fixing disk. The receiving component is provided with a receiving cavity, and the receiving component has a first opening end and a second opening end opposite to the first opening end. The fixing disk is in contact with the second opening end. The receiving component is arranged on the outer periphery of the rotating disk. The receiving component is used to receive the element core, the sealing body, and the shell, and the fixing disk bears the element core, the sealing body, and the shell. The rotating disk can rotate relative to the fixing disk around its own rotation axis, so as to drive the receiving component to rotate relative to the fixing disk around the rotation axis of the rotating disk itself, so as to convey the element core, the sealing body, and the shell between the feeding device, the encapsulation device, and the first pressing device.

[0015] Further, the encapsulation device includes a first operating mechanism and a second operating mechanism. The first operating mechanism can be connected to the first opening end to seal the opening corresponding to the first opening end. The second operating mechanism can be connected to the second opening end to seal the opening corresponding to the second opening end, so as to make the receiving cavity a sealed receiving cavity;

[0016] By extracting the air in the cavity to make the cavity in a negative pressure state, the first operating mechanism moves towards the second operating mechanism, so that the element core, the sealing body and the housing are packaged and combined under the negative pressure state.

[0017] Furthermore, the negative pressure packaging device further includes a cushion paper laying device, and the cushion paper laying device is used to provide cushion paper for the bottom end of the housing.

[0018] Furthermore, the cushion paper laying device includes a blade, a cushion paper conveying mechanism and a cushion paper feeding mechanism. The cushion paper conveying mechanism is used to convey the cushion paper to the blade so that the blade can cut the cushion paper, and the cushion paper feeding mechanism is used to feed the cushion paper cut by the blade to the bottom end of the housing.

[0019] A negative pressure packaging device for an aluminum electrolytic capacitor provided by the present invention, the feeding device outputs the housing, the element core and the sealing body one by one, and the packaging device packages and combines the housing, the element core and the sealing body output by the feeding device under a negative pressure state, so that the sealing body is at a first depth of the housing. The first pressing device presses the housing, the element core and the sealing body processed by the packaging device under a negative pressure state, so that the sealing body is at a second depth of the housing. The second depth is relatively closer to the bottom end of the housing than the first depth. The sealing body reaches the first depth through the packaging device and then enters the second depth through the first pressing device, solving the problem that the sliding distance of the sealing body on the inner wall of the housing is too long in the prior art, avoiding the overheating of the friction surface of the sealing body and generating fine melting, and being able to ensure that the outer diameter of the sealing body will not shrink, thereby ensuring the airtightness between the housing and the sealing body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 It is a schematic structural diagram of the negative pressure packaging device in the embodiment of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the first feeding mechanism in the embodiment of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the cushion paper laying device in the embodiment of the present invention;

[0024] Figure 4 ForFigure 3 Enlarged view of location A;

[0025] Figure 5 Schematic structural diagram of the second feeding mechanism in the embodiment of the present invention;

[0026] Figure 6 Schematic structural diagram of the encapsulation device in the embodiment of the present invention;

[0027] Figure 7 Schematic structural diagram of the conveying device in the embodiment of the present invention.

[0028] Main components:

[0029] 100, feeding device; 110, first feeding mechanism; 111, vibrating disk; 112, output mechanism; 1121, conveying member; 1122, ejector rod; 1123, first detection mechanism; 120, second feeding mechanism; 121, support member; 122, rotating member; 130, outer shell; 140, element core; 150, sealing body; 200, encapsulation device; 210, first operating mechanism; 211, pressing rod; 212, first cover plate; 220, second operating mechanism; 300, first pressing device; 400, conveying device; 410, rotating disk; 420, accommodating assembly; 430, fixed disk; 431, through hole; 500, second pressing device; 600, pad paper laying device; 610, blade; 620, pad paper conveying mechanism; 630, pad paper feeding mechanism; 700, frame.

[0030] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, the descriptions involving "first", "second", etc. in the present invention are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, "and / or" throughout the text includes three scenarios. Taking A and / or B as an example, it includes the technical solution of A, the technical solution of B, and the technical solution where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] As Figures 1 to 7 shown, in some embodiments, a negative pressure encapsulation device for an aluminum electrolytic capacitor includes a feeding device 100, an encapsulation device 200, a first pressing device 300, and a conveying device 400. The feeding device 100 is used to output the outer shell 130, the element core 140, and the sealing body 150 one by one. The encapsulation device 200 is used to encapsulate and combine the outer shell 130, the element core 140, and the sealing body 150 output by the feeding device 100 in a negative pressure state, so that the sealing body 150 is at a first depth in the outer shell 130. The first pressing device 300 is used to press the outer shell 130, the element core 140, and the sealing body 150 processed by the encapsulation device 200 in a negative pressure state, so that the sealing body 150 is at a second depth in the outer shell 130, and the second depth is closer to the bottom end of the outer shell 130 relative to the first depth. The conveying device 400 is used to convey the element core 140, the sealing body 150, and the outer shell 130 between the feeding device 100, the encapsulation device 200, and the first pressing device 300. During operation, the sealing body 150 reaches the first depth through the encapsulation device 200 and then enters the second depth through the first pressing device 300, solving the problem in the prior art that the sliding distance of the sealing body 150 on the inner wall of the outer shell 130 is too long, avoiding overheating of the friction surface of the sealing body 150 and generating slight melting, and being able to ensure that the outer diameter of the sealing body 150 does not shrink, thereby ensuring the airtightness between the outer shell 130 and the sealing body 150.

[0035] More specifically, the outer shell 130 is an aluminum shell, that is, a cylindrical cup-shaped body made of aluminum material. The sealing body 150 is a rubber plug, the shape of the sealing body 150 is cylindrical, and the outer diameter of the sealing body 150 is larger than the inner diameter of the outer shell 130. The element core 140 is formed into a cylindrical shape by combining electrolytic aluminum foil, lead pins, and dielectric paper.

[0036] In some embodiments, the negative pressure encapsulation device further includes a second pressing device 500, which is used to press the housing 130, the element core 140, and the sealing body 150 processed by the first pressing device 300 in a negative pressure state, so that the sealing body 150 is at a third depth of the housing 130, and the third depth is closer to the bottom end of the housing 130 relative to the second depth. For example, the total length of the movement of the sealing body 150 relative to the housing 130 is L. During encapsulation, the sealing body 150 is extruded and rubbed to move by L at one time. Since the friction system is large, when rubbed and moved by L at one time, the sealing body 150 instantaneously heats up due to friction, causing the sealing body 150 to be damaged, thereby destroying the airtightness between the sealing body 150 and the housing 130. By providing the first pressing device 300 and the second pressing device 500, after being processed by the encapsulation device 200, the sealing body 150 moves by L1 relative to the housing 130 (that is, the sealing body 150 is at the first depth of the housing 130), after being processed by the first pressing device 300, the sealing body 150 moves by L2 relative to the housing 130 (that is, the sealing body 150 is at the second depth of the housing 130), and after being processed by the second pressing device 500, the sealing body 150 moves by L3 relative to the housing 130 (that is, the sealing body 150 is at the third depth of the housing 130), and L is the sum of L1, L2, and L3. The sealing body 150 moves three times within the housing 130. Since the friction distance each time is shorter, it avoids damaging the sealing body 150 due to heat generated by long-distance friction, making the airtightness between the encapsulated sealing body 150 and the housing 130 better. Specifically, both the first pressing device 300 and the second pressing device 500 can be multiple, so as to shorten the distance that the sealing body 150 moves relative to the housing 130 each time. More specifically, the encapsulation device 200, the first pressing device 300, and the second pressing device 500 have the same structure.

[0037] Furthermore, as Figure 2 and Figure 5 shown, the feeding device 100 includes a first feeding mechanism 110 and a second feeding mechanism 120. The first feeding mechanism 110 is used to output the housing 130 one by one, and the second feeding mechanism 120 is used to output the element core 140 and the sealing body 150 one by one.

[0038] Even further, as Figure 2As shown, the first feeding mechanism 110 includes a vibrating disk 111 and an output mechanism 112. The vibrating disk 111 is connected to the output mechanism 112. The vibrating disk 111 is used to convey the outer shells 130 one by one to the output mechanism 112, and the output mechanism 112 is used to output the outer shells 130 conveyed by the vibrating disk 111 to the conveying device 400. Specifically, the vibrating disk 111 is a vibrating disk. Preferably, the output mechanism 112 is provided with a first detection mechanism 1123. The first detection mechanism 1123 is used to detect whether there is an outer shell 130 conveyed by the conveying mechanism. When the first detection mechanism 1123 detects that there is no outer shell 130 on the conveying mechanism, it will give a prompt. The first detection mechanism 1123 can be, but is not limited to, a sensor.

[0039] Furthermore, the output mechanism 112 includes a conveyor 1121 and a push rod 1122. The conveyor 1121 is connected to the vibrating disk 111. The push rod 1122 can move in a direction close to or away from the conveyor 1121, and drive the outer shell 130 on the conveyor 1121 into the conveying device 400. More specifically, the push rod 1122 is arranged below the conveyor 1121, and the push rod 1122 can move up and down. The conveying device 400 is arranged above the conveyor 1121. The conveyor 1121 conveys the outer shell 130 to a preset position. The push rod 1122 moves upward and drives the outer shell 130 to move in a direction close to the conveying device 400. After the push rod 1122 sends the outer shell 130 into the conveying device 400, it moves downward, and then moves upward again to send the next outer shell 130 into the conveying device 400, and so on for cyclic operation.

[0040] In some embodiments, as Figure 5 shown, the second feeding mechanism 120 includes a support 121 and a rotating member 122. The rotating member 122 can carry the element core 140 and the sealing body 150. The rotating member 122 is rotatably arranged on the support 121 and drives the element core 140 and the sealing body 150 to move in a direction close to the conveying device 400, so as to output the element core 140 and the sealing body 150 one by one. Specifically, the rotating member 122 is rotatably arranged in the middle of the support 121, and conveys the element core 140 and the sealing body 150 at both ends. In this way, when the rotating member 122 rotates one circle, two groups of element cores 140 and sealing bodies 150 can be output, improving the conveying efficiency. More specifically, the rotating member 122 fixes the element core 140 and the sealing body 150 by clamping, and then releases the element core 140 and the sealing body 150 after reaching the preset position.

[0041] In some embodiments, as Figure 7As shown, the conveying device 400 includes a rotating disk 410, a receiving assembly 420, and a fixed disk 430. The receiving assembly 420 is provided with a receiving cavity, and the receiving assembly 420 has a first open end and a second open end opposite to the first open end. The fixed disk 430 is in contact with the second open end. The receiving assembly 420 is disposed on the outer periphery of the rotating disk 410. The receiving assembly 420 is used to receive the element core 140, the sealing body 150, and the outer shell 130, and the fixed disk 430 bears the element core 140, the sealing body 150, and the outer shell 130. The rotating disk 410 can rotate relative to the fixed disk 430 about its own rotation axis, so as to drive the receiving assembly 420 to rotate relative to the fixed disk 430 about the rotation axis of the rotating disk 410 itself, thereby conveying the element core 140, the sealing body 150, and the outer shell 130 between the feeding device 100, the encapsulation device 200, and the first pressing device 300. Specifically, the rotating disk 410 is disposed above the fixed disk 430.

[0042] More specifically, the conveying device 400 further includes a first suction rod. The first suction rod is disposed adjacent to the outer edge of the rotating disk 410. The first suction rod is of a hollow structure. When the rotating member 122 conveys the element core 140 and the sealing body 150 to the outer edge of the rotating disk 410, the first suction rod moves in the direction close to the rotating member 122 (moves downward). After the first suction rod moves to the top of the element core 140, the first suction rod adsorbs the element core 140. After the first suction rod adsorbs the element core 140, it moves in the direction close to the receiving assembly 420. After the first suction rod moves above the receiving assembly 420, it moves downward and extends into the receiving cavity of the receiving assembly 420. The first suction rod stops sucking air, so that the element core 140 and the sealing body 150 fall into the receiving cavity under their own gravity.

[0043] In some embodiments, as Figure 2 shown, the negative pressure encapsulation device further includes a pad paper laying device 600. The pad paper laying device 600 is used to provide pad paper for the bottom end of the outer shell 130. By providing pad paper at the bottom end of the outer shell 130, the friction between the element core 140 and the bottom end of the outer shell 130 can be prevented.

[0044] Preferably, the negative pressure encapsulation device further includes a fourth detection mechanism. The fourth detection mechanism is adjacent to the pad paper laying device 600. The fourth detection mechanism is used to detect whether there is an outer shell 130 in the receiving assembly 420 entering the pad paper laying device 600. If there is an outer shell 130 in the receiving assembly 420, it enters the pad paper laying device 600. The fourth detection mechanism has the same structure as the first detection mechanism 1123.

[0045] Specifically, the pad paper laying device 600 includes a blade 610, a pad paper conveying mechanism 620, and a pad paper feeding mechanism 630. The pad paper conveying mechanism 620 is configured to convey the pad paper to the blade 610 so that the blade 610 can cut the pad paper. The pad paper feeding mechanism 630 is configured to feed the pad paper cut by the blade 610 to the bottom end of the housing 130. The pad paper conveying device 400 can be a second suction rod. More specifically, the blade 610 and the second suction rod are disposed above the pad paper conveying mechanism 620, and the accommodating assembly 420 is located below the pad paper conveying mechanism 620. The pad paper conveying mechanism 620 conveys the pad paper to the bottom of the second suction rod. When the pad paper reaches a preset length, the suction rod adsorbs the pad paper, the blade 610 cuts the pad paper, the second suction rod moves downward and extends into the accommodating cavity of the accommodating assembly 420. After the pad paper reaches the bottom of the accommodating assembly 420, the second suction rod stops adsorbing the pad paper, and the pad paper is laid on the bottom of the accommodating assembly 420. The second suction rod moves upward and returns above the pad paper conveying mechanism 620.

[0046] Furthermore, the negative pressure encapsulation device further includes a second detection mechanism configured to detect whether there is pad paper at the bottom of the housing 130 of the pad paper laying device 600. When the second detection mechanism detects that there is no pad paper at the bottom of the housing 130, the housing 130 is removed. When the second detection mechanism detects that there is pad paper laid at the bottom of the housing 130, the housing 130 is fed to the next working station. Even further, the second detection mechanism can be a sensor.

[0047] In some embodiments, as Figure 6 shown, the encapsulation device 200 includes a first operating mechanism 210 and a second operating mechanism 220. The first operating mechanism 210 can be connected to the first open end to seal the opening corresponding to the first open end, and the second operating mechanism 220 can be connected to the second open end to seal the opening corresponding to the second open end, thereby making the accommodating cavity a sealed accommodating cavity. By evacuating the air in the accommodating cavity to make the accommodating cavity in a negative pressure state, the first operating mechanism 210 moves in a direction close to the second operating mechanism 220 so that the element core 140, the sealing body 150, and the housing 130 are encapsulated and combined in a negative pressure state.

[0048] Specifically, the first operating mechanism 210 includes a pressing rod 211 and a first cover plate 212. The first pressing rod 211 penetrates through the first cover plate 212 and is capable of driving the first cover plate 212 to move towards the second operating mechanism 220, so as to seal the opening corresponding to the first opening end. The second operating mechanism 220 is a second cover plate. During operation, when the cavity is in a negative pressure state, the pressing rod 211 moves downward, squeezing the sealing body 150, causing the sealing body 150 to enter the inner cavity of the outer shell 130. At this time, the element core 140 is completely inserted into the inner cavity of the outer shell 130, and the sealing body 150 is partially inserted into the outer shell 130. The outer wall of the sealing body 150 is in close extrusion contact with the inner wall of the outer shell 130, so that the inner cavity of the outer shell 130, the element core 140, and the dielectric are in a negative pressure state. Further, the encapsulation device 200 has the same structure as the first pressing device 300 and the second pressing device 500. The element core 140, the sealing body 150, and the outer shell 130 are also processed in a negative pressure state in the first pressing device 300 and the second pressing device 500, that is, it is necessary to evacuate the accommodating assembly 420. The first pressing device 300 and the second pressing device 500 can also clean the residues left by the encapsulation device 200 when evacuating, and can also prevent air from entering the inner cavity of the outer shell 130 when the sealing body 150 moves relative to the outer shell 130.

[0049] During operation, the rotating disk 410 drives the accommodating assembly 420 to rotate near the pressing rod 211. The fixed disk 430 is provided with a through hole 431, and the second cover plate penetrates through the first through hole 431 and the second opening end of the accommodating assembly 420. It should be noted that the fixed disk 430 is provided with a plurality of through holes 431, and the first pressing device 300 and the second pressing device 500 penetrate through the corresponding through holes 431 and seal the opening corresponding to the second opening end of the accommodating assembly 420.

[0050] The element core 140 of the electrolytic capacitor generates heat during operation. Under normal pressure, the heat will generate expanding gas, while under negative pressure, no expanding gas will be generated, which can increase the service life of the electrolytic capacitor.

[0051] In some embodiments, the negative pressure encapsulation device further includes a third detection mechanism. The third detection mechanism is used to detect whether the sealing body 150 reaches a preset depth of the outer shell 130, so as to judge whether the sealing body 150, the element core 140, and the outer shell 130 are qualified products. The third detection mechanism can be a pressure detection rod. The pressure detection rod can abut against the top of the sealing body 150 and squeeze the sealing body 150, and then detect the pressure value. If the sealing body 150 reaches the third depth (preset depth) and the pressure value detected by the pressure detection rod is within the preset range, it is judged as a qualified product. If the sealing body 150 does not reach the third depth and the pressure value detected by the pressure detection rod exceeds the preset range, it is judged as a defective product.

[0052] The negative pressure encapsulation device further includes a frame 700, and the feeding device 100, the encapsulation device 200, the first pressing device 300, the second pressing device 500 and the cushion paper laying device 600 are all arranged on the frame 700.

[0053] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A negative pressure packaging device for aluminum electrolytic capacitors, characterized in that, Including: A feeding device for outputting a housing, an element core, and a sealing body one by one; A packaging device for packaging and combining the housing, the element core, and the sealing body output by the feeding device under a negative pressure state, so that the sealing body is at a first depth of the housing; A first pressing device for pressing the housing, the element core, and the sealing body processed by the packaging device under a negative pressure state, so that the sealing body is at a second depth of the housing, and the second depth is closer to the bottom end of the housing than the first depth; And A conveying device for conveying the element core, the sealing body, and the housing between the feeding device, the packaging device, and the first pressing device; The negative pressure packaging equipment further includes a second pressing device, and the second pressing device is used for pressing the housing, the element core, and the sealing body processed by the first pressing device under a negative pressure state, so that the sealing body is at a third depth of the housing, and the third depth is closer to the bottom end of the housing than the second depth; The feeding device includes a first feeding mechanism and a second feeding mechanism, the first feeding mechanism is used for outputting the housing one by one, and the second feeding mechanism is used for outputting the element core and the sealing body one by one.

2. The negative pressure encapsulation device according to claim 1, characterized in that The first feeding mechanism includes a vibrating disk and an output mechanism, the vibrating disk is connected to the output mechanism, the vibrating disk is used for conveying the housing to the output mechanism one by one, and the output mechanism is used for outputting the housing conveyed by the vibrating disk to the conveying device.

3. The negative pressure packaging device according to claim 2, wherein The output mechanism includes a conveying member and a ejector rod, the conveying member is connected to the vibrating disk, the ejector rod can move in a direction close to or away from the conveying member, and drive the housing of the conveying member into the conveying device.

4. The negative pressure encapsulation device according to claim 1, wherein The second feeding mechanism includes a support member and a rotating member, the rotating member can carry the element core and the sealing body, the rotating member is rotatably arranged on the support member, and drives the element core and the sealing body to move in a direction close to the conveying device, and then outputs the element core and the sealing body one by one.

5. The negative pressure encapsulation device according to claim 1, wherein, The conveying device includes a rotating disk, a receiving component, and a fixed disk, the receiving component is provided with a receiving cavity, and the receiving component has a first opening end and a second opening end opposite to the first opening end, the fixed disk is in contact with the second opening end, the receiving component is arranged on the outer periphery of the rotating disk, the receiving component is used for receiving the element core, the sealing body, and the housing, and the fixed disk bears the element core, the sealing body, and the housing, and the rotating disk can rotate relative to the fixed disk around its own rotation axis, so as to drive the receiving component to rotate relative to the fixed disk around the rotation axis of the rotating disk itself, so as to convey the element core, the sealing body, and the housing between the feeding device, the packaging device, and the first pressing device.

6. The negative pressure encapsulation device according to claim 5, characterized in that, The encapsulation device includes a first operating mechanism and a second operating mechanism. The first operating mechanism can be connected to the first open end to seal the opening corresponding to the first open end, and the second operating mechanism can be connected to the second open end to seal the opening corresponding to the second open end, so as to make the cavity a sealed cavity; By pumping out the air in the cavity to make the cavity in a negative pressure state, the first operating mechanism moves towards the direction close to the second operating mechanism, so that the element core, the sealing body and the housing are encapsulated and combined under the negative pressure state.

7. The negative pressure encapsulation device according to claim 1, characterized in that, The negative pressure encapsulation device further includes a pad paper laying device, and the pad paper laying device is used to provide pad paper for the bottom end of the housing.

8. The negative pressure encapsulation device according to claim 7, characterized in that, The pad paper laying device includes a blade, a pad paper conveying mechanism and a pad paper feeding mechanism. The pad paper conveying mechanism is used to convey the pad paper to the blade so that the blade can cut the pad paper, and the pad paper feeding mechanism is used to feed the pad paper cut by the blade to the bottom end of the housing.

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