Plug pin mechanism and plug pin device

Abstract

The utility model discloses a plug pin mechanism and a plug pin device. The plug pin mechanism comprises a sleeve and a pressing rod. The sleeve has a tube cavity; the first end of the sleeve is provided with a first pipe opening which is used for allowing the pressing rod to enter the pipe cavity so that the pressing rod can make sealing contact with the inner wall of the pipe cavity. The second end of the sleeve is provided with a second pipe orifice, and the second pipe orifice is used for pre-placing a sealing nail and allowing the sealing nail to be ejected out by the pressing rod, so that a to-be-sealed hole in the target object is sealed by the sealing nail; the second end of the sleeve is configured to be in sealing contact with the periphery of a to-be-sealed hole in a target object; a side wall through hole is formed in the side wall of the sleeve, one end of the side wall through hole communicates with the pipe cavity, and the other end of the side wall through hole is used for being connected with a vacuumizing device; the pressing rod is configured to move towards the second end of the sleeve and eject the sealing nail out under the condition that the pipe cavity is pumped to be in a vacuum state by the vacuumizing device. According to the plug pin mechanism, before the to-be-sealed hole of the target object is sealed, redundant gas in the target object is pumped out in the sealed environment, and the sealing effect on the target object is improved.

Description

Technical Field

[0001] The present application relates to the field of automated assembly technology, and in particular to a nailing mechanism and a nailing device. Background Art

[0002] The nail inserting mechanism is usually used to insert a sealing nail into a hole to be sealed of a target object to seal the target object.

[0003] At present, most target objects need to remove excess air from their interior before being sealed by sealing nails. Taking battery production as an example, the impact of moisture on batteries is undoubtedly huge, including high-temperature baking, high-temperature static, gas generation during charging, moisture turning into water vapor, deformation and hollowing of the battery aluminum shell due to the internal and external pressure difference, and air and gaps inside the battery will affect the battery's infiltration and charging and discharging performance, resulting in lithium non-embedding, or excessive thickness due to appearance problems, so that the battery performance is qualified but cannot be used. In order to solve these problems, it is usually necessary to remove excess gas inside the battery's injection hole before it is sealed by the sealing nail.

[0004] However, most of the current nailing mechanisms cannot meet the requirement of removing excess air inside the target object before it is sealed by the sealing nail. Utility Model Content

[0005] The purpose of the present application is to provide a nailing mechanism and a nailing device, which can improve the process quality of production and manufacturing of such target objects by extracting excess gas inside the target object in a sealed environment before sealing the hole to be sealed of the target object.

[0006] In the first aspect, the present application provides a nail plugging mechanism, including a sleeve and a pressure rod; the sleeve has a tubular cavity; the first end of the sleeve has a first pipe opening, the first pipe opening is used for the pressure rod to enter the tubular cavity, so that the pressure rod is in sealing contact with the inner wall of the tubular cavity; the second end of the sleeve has a second pipe opening, the second pipe opening is used for pre-placing a sealing nail and for the sealing nail to be pushed out by the pressure rod, so that the sealing nail can seal the hole to be sealed on the target object; the second end of the sleeve is configured to be in sealing contact with the surrounding of the hole to be sealed on the target object; the side wall of the sleeve is provided with a side wall through hole, one end of the side wall through hole is connected to the tubular cavity, and the other end of the side wall through hole is used to be connected to a vacuum device; the pressure rod is configured to move toward the second end of the sleeve and push out the sealing nail when the tubular cavity is evacuated to a vacuum state by the vacuum device.

[0007] The above-mentioned nail plugging mechanism achieves sealing contact between the second end of the sleeve in the nail plugging mechanism and the target object, and sealing contact between the pressure rod and the inner wall of the tube cavity, and then uses a vacuum device to evacuate the tube cavity and the excess gas inside the target object. After that, the pressure rod pushes the sealing nail out and enters the hole to be sealed to seal the target object, thereby achieving the discharge of excess gas inside the target object before it is sealed, thereby improving the process quality of production and manufacturing of such target objects.

[0008] In combination with the first aspect, optionally, the mechanism also includes a seal; one end of the seal is sealingly connected to the second end of the sleeve, and the other end of the seal is used for sealing contact with the periphery of the hole to be sealed on the target object; the seal is provided with a seal through hole connected to the second pipe opening, and the seal through hole is used for allowing the sealing pin to be pushed out by the pressure rod.

[0009] The above-mentioned nail plugging mechanism improves the sealing performance of the contact between the second end and the target object by arranging a sealing member at the second end of the sleeve, thereby improving the effect of extracting excess gas inside the target object. Finally, the influence of gas on the target object is reduced, and the process quality of the production and manufacturing of such target objects is further improved.

[0010] In combination with the first aspect, optionally, the mechanism further includes an elastic member; one end of the elastic member is sealingly connected to the second end of the sleeve, and the other end of the elastic member is sealingly contacted with the sealing member.

[0011] The above-mentioned nail plugging mechanism uses an elastic member to connect the sealing member and the second end of the sleeve. On the basis of the sealing member and the target object being in sealed contact, the elastic member provides the sealing member with an elastic force from the second end of the sleeve toward the target object, thereby increasing the pressure between the sealing member and the target object, thereby further improving the sealing performance of the contact between the second end of the sleeve and the target object.

[0012] In combination with the first aspect, optionally, the sleeve includes an upper sleeve and a lower sleeve; the upper sleeve and the lower sleeve are detachably connected; the first end of the sleeve is located on an end of the upper sleeve away from the lower sleeve, and the second end of the sleeve is located on an end of the lower sleeve away from the upper sleeve.

[0013] The above-mentioned nail plugging mechanism divides the sleeve into a detachable upper sleeve and a lower sleeve, so that when the sealing nail is placed inside the sleeve, it is not necessary to pull the pressure rod out of the tube cavity, thereby improving the convenience of using the nail plugging mechanism.

[0014] In combination with the first aspect, optionally, the sleeve further includes a first sealing ring; the first sealing ring is sleeved at the connection between the upper sleeve and the lower sleeve, and is sealed and connected to the upper sleeve and the lower sleeve respectively.

[0015] The above-mentioned nail plugging mechanism can be provided with a first sealing ring at the connection between the upper sleeve and the lower sleeve, thereby improving the sealing performance of the connection between the upper sleeve and the lower sleeve, thereby making it possible to more fully extract the excess gas inside the target object.

[0016] In combination with the first aspect, optionally, the side wall through hole is arranged on the lower sleeve.

[0017] The above-mentioned nail plugging mechanism shortens the distance between the side wall through hole and the second end of the sleeve by arranging the side wall through hole on the lower sleeve, thereby making it possible to more fully extract the excess gas inside the target object.

[0018] In combination with the first aspect, optionally, the mechanism also includes a second sealing ring; the second sealing ring is sleeved on the portion of the pressure rod located within the tubular cavity; the inner ring of the second sealing ring is in sealing contact with the pressure rod, and the outer ring of the second sealing ring is in sealing contact with the inner wall of the tubular cavity.

[0019] The above-mentioned nail plugging mechanism improves the sealing performance between the pressure rod and the inner wall of the tube cavity by sleeve-arranging the second sealing ring on the pressure rod, thereby making it possible to more fully extract the excess gas inside the target object.

[0020] In combination with the first aspect, optionally, the sleeve further includes an anti-slip layer; the anti-slip layer is laid on the inner wall of the lumen.

[0021] The above-mentioned nail plugging mechanism, by laying an anti-slip layer on the inner wall of the tube cavity, when the sealing nail is placed in the tube cavity, the anti-slip layer can prevent the sealing nail from falling to the second end of the sleeve prematurely to a certain extent, thereby avoiding to a certain extent the problem of the sealing nail falling to the second end of the sleeve prematurely and hindering the vacuuming of the target object.

[0022] In combination with the first aspect, optionally, the target object includes a battery cell; and the hole to be sealed includes a battery cell injection hole.

[0023] The above-mentioned nailing mechanism, by using the nailing mechanism to seal the liquid injection hole of the battery cell, solves to a certain extent the problem that the pressure difference between the inside and outside of the battery cell causes the battery aluminum shell to deform and hollow, and the air and gaps inside the battery cause adverse effects on the battery infiltration and charging and discharging performance.

[0024] In a second aspect, the present application provides a nailing device, comprising a frame, a cylinder, and the nailing mechanism described in the first aspect; the cylinder is arranged on the frame; the output end of the cylinder is connected to the pressure rod and is configured to drive the pressure rod to move.

[0025] The above-mentioned nail plugging device has the same beneficial effects as the first aspect or any optional implementation of the first aspect, and will not be described in detail here.

[0026] In summary, the nail plugging mechanism and nail plugging device provided by the present application, through the sealing contact between the second end of the sleeve and the target object, and the sealing contact between the pressure rod and the inner wall of the tube cavity, and then the vacuum device is used to extract the excess gas inside the tube cavity and the target object, and then the pressure rod pushes the sealing nail out and enters the hole to be sealed to seal the target object, so as to discharge the excess gas inside the target object before it is sealed, and improve the process quality of the production and manufacturing of such target objects. By arranging a sealing member at the second end of the sleeve, the effect of extracting the excess gas inside the target object is further improved. Finally, the process quality of the production and manufacturing of such target objects is further improved. By using an elastic member to connect the sealing member and the second end of the sleeve, the pressure between the sealing member and the target object is increased. Then, the sealing of the contact between the second end of the sleeve and the target object is further improved. By dividing the sleeve into a detachable upper sleeve and a lower sleeve, the convenience of use of the nail plugging mechanism is improved. By sleeve-arranging a first sealing ring at the connection between the upper sleeve and the lower sleeve, the excess gas inside the target object is more fully extracted. In particular, the nailing mechanism provided in the present application can be used to seal the liquid injection hole of the battery cell, which to a certain extent solves the problem that the pressure difference between the inside and outside of the battery cell causes the battery aluminum shell to deform and hollow, and the air and gaps inside the battery have adverse effects on the battery's wetting and charging and discharging performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the structure of the nail plugging mechanism provided in an embodiment of the present application;

[0029] Figure 2 A schematic diagram of the structure of the nail plugging device provided in an embodiment of the present application.

[0030] Icons: 100, nailing mechanism; 110, sleeve; 111, upper sleeve; 1111, first pipe opening; 112, lower sleeve; 1121, second pipe opening; 1122, side wall through hole; 112, first sealing ring; 113, anti-slip layer; 120, pressure rod; 130, sealing member; 140, elastic member; 150, second sealing ring; 10, nailing device; 200, frame; 300, cylinder; 400, vacuum device; 20, sealing nail. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] Please refer to Figure 1 , Figure 1 : is a schematic diagram of the structure of the nail plugging mechanism 100 provided in an embodiment of the present application. The nail plugging mechanism 100 provided in an embodiment of the present application may include a sleeve 110 and a pressure rod 120. The sleeve 110 may have a lumen. The first end of the sleeve 110 may have a first pipe opening 1111, and the first pipe opening 1111 may be used to allow the pressure rod 120 to enter the lumen so that the pressure rod 120 is in sealing contact with the inner wall of the lumen. The second end of the sleeve 110 may have a second pipe opening 1121, and the second pipe opening 1121 may be used to pre-place the sealing nail 20 and allow the sealing nail 20 to be pushed out by the pressure rod 120, so that the sealing nail 20 can seal the hole to be sealed on the target object. The second end of the sleeve 110 can be configured to be in sealing contact with the periphery of the hole to be sealed on the target object. The sleeve 110 may be provided with a side wall through hole 1122, one end of the side wall through hole 1122 may be connected to the lumen, and the other end of the side wall through hole 1122 may be used to connect to the vacuum device 400. The pressure rod 120 may be configured to move toward the second end of the sleeve 110 and push out the sealing nail 20 when the lumen is evacuated to a vacuum state by the vacuum device 400.

[0038] When the nailing mechanism 100 provided in the embodiment of the present application is in an idle state, the pressure rod 120 may not be located in the lumen, that is, the pressure rod 120 and the sleeve 110 may be in a separated state. During the operation of the nailing mechanism 100, a portion of the pressure rod 120 may be located in the lumen and reciprocate inside the lumen according to the use requirements. Of course, a portion of the pressure rod 120 may also be located in the lumen all the time.

[0039] The pressure rod 120 may have a sealing portion, which may be an end portion of the pressure rod 120 that moves inside the lumen or other portion that moves inside the lumen. The outer diameter of the sealing portion may be substantially consistent with the inner diameter of the lumen to improve the sealing performance of the contact position between the sealing portion and the inner wall of the lumen.

[0040] The working process of the nail plugging mechanism 100 provided in the embodiment of the present application can be specifically as follows: first, the sealing nail 20 is placed in the lumen, and the pressure rod 120 enters the lumen to prepare to push the sealing nail 20 out. Next, the second end of the sleeve 110 abuts against the periphery of the hole to be sealed on the target object. In order to improve the sealing between the second end and the target object, the sleeve 110 can squeeze the target object as much as possible. In this case, a sealed space is usually formed between the pressure rod 120 and the target object in the lumen. Then, the excess gas in the sealed space can be removed by a vacuum pump or other vacuum device 400 through the side wall through hole 1122, and then the excess gas inside the target object can also be removed by the vacuum device 400 through the hole to be sealed. Finally, the pressure rod 120 can be driven by a motor, driven by an air pump or manually to move toward the second pipe mouth 1121, and the sealing nail 20 is pushed out from the second pipe mouth 1121 by the pressure rod 120, and enters the hole to be sealed to complete the sealing of the target object.

[0041] It can be understood that since the second end of the sleeve 110 can be in sealing contact with the periphery of the hole to be sealed, the inner diameter of the second pipe opening 1121 can be larger than the aperture of the hole to be sealed.

[0042] In the above implementation process, the sealing contact between the second end of the sleeve 110 in the nail plugging mechanism 100 and the target object, and the sealing contact between the pressure rod 120 and the inner wall of the tube cavity, and then the excess gas inside the tube cavity and the target object is extracted by the vacuum device 400, and then the sealing nail 20 is pushed out by the pressure rod 120 and enters the hole to be sealed to seal the target object. The excess gas inside the target object is discharged before it is sealed. The process quality of the production and manufacturing of such target objects is improved.

[0043] Please continue to refer to Figure 1 In some optional embodiments, the mechanism may further include a seal 130. One end of the seal 130 may be sealedly connected to the second end of the sleeve 110, and the other end of the seal 130 may be used to seal and contact the periphery of the hole to be sealed on the target object. The seal 130 may be provided with a seal 130 through hole connected to the second pipe opening 1121, and the seal 130 through hole may be used for the sealing pin 20 to be pushed out by the pressure rod 120.

[0044] The material of the sealing member 130 may be nitrile rubber, chloroprene rubber, butyl rubber, silicone rubber, fluororubber, etc.

[0045] It can be understood that since the seal 130 can be in sealing contact with the periphery of the hole to be sealed and the sealing nail 20 can be pushed into the hole to be sealed through the second pipe opening 1121, the seal 130 can be provided with a corresponding seal 130 through hole. The seal 130 through hole is connected to the second pipe opening 1121, and the inner diameter of the seal 130 through hole can also be larger than the hole diameter of the hole to be sealed.

[0046] In the above implementation process, by providing the seal 130 at the second end of the sleeve 110, the sealing performance between the second end and the target object is improved, thereby improving the effect of extracting excess gas inside the target object. Finally, the process quality of the production and manufacturing of such target objects is further improved.

[0047] Please continue to refer to Figure 1 In some optional embodiments, the mechanism may further include an elastic member 140 . One end of the elastic member 140 may be sealed and connected to the second end of the sleeve 110 , and the other end of the elastic member 140 may be in sealing contact with the sealing member 130 .

[0048] That is, the sealing member 130 is connected to the second end through the elastic member 140. The elastic member 140 may be a spring, elastic rubber, or the like.

[0049] In order to achieve a sealed connection between the spring and the second end of the sleeve 110 and the seal 130 respectively, a sealing sleeve can be provided outside the elastic member 140. The sealing sleeve can deform along with the elastic member 140 and will not bring any resistance to the deformation of the elastic member 140.

[0050] In the above implementation process, the elastic member 140 is used to connect the seal 130 and the second end of the sleeve 110. On the basis of the seal 130 and the target object being in sealed contact, the elastic member 140 provides the seal 130 with an elastic force from the second end of the sleeve 110 toward the target object, thereby increasing the pressure between the seal 130 and the target object. This further improves the sealing performance of the contact between the second end of the sleeve 110 and the target object.

[0051] Please continue to refer to Figure 1 In some optional embodiments, the sleeve 110 may include an upper sleeve 111 and a lower sleeve 112. The upper sleeve 111 may be detachably connected to the lower sleeve 112. The first end of the sleeve 110 may be located at an end of the upper sleeve 111 away from the lower sleeve 112, and the second end of the sleeve 110 may be located at an end of the lower sleeve 112 away from the upper sleeve 111.

[0052] The detachable connection between the upper sleeve 111 and the lower sleeve 112 can be achieved by means of a snap connection, a threaded connection, or the like.

[0053] In the embodiment of the present application, a part of the pressure rod 120 may also be always located in the lumen. In the specific operation process, the upper sleeve 111 and the lower sleeve 112 can be separated, and the sealing nail 20 can be put in from the separation. Then the upper sleeve 111 and the lower sleeve 112 are assembled.

[0054] In the above implementation process, the sleeve 110 is divided into a detachable upper sleeve 111 and a lower sleeve 112, so that the pressure rod 120 does not need to be pulled out from the lumen when the sealing nail 20 is placed inside the sleeve 110, thereby improving the convenience of use of the nail plugging mechanism 100.

[0055] Please continue to refer to Figure 1 In some optional embodiments, the sleeve 110 may further include a first sealing ring 112. The first sealing ring 112 may be sleeved at the connection between the upper sleeve 111 and the lower sleeve 112, and may be sealed and connected to the upper sleeve 111 and the lower sleeve 112 respectively.

[0056] The material of the first sealing ring 112 can be nitrile rubber, chloroprene rubber, butyl rubber, silicone rubber, fluororubber, etc. The first sealing ring 112 can be sleeved at the connection between the upper sleeve 111 and the lower sleeve 112 to improve the sealing performance of the connection between the upper sleeve 111 and the lower sleeve 112.

[0057] In the above implementation process, the first sealing ring 112 can be sleeved at the connection between the upper sleeve 111 and the lower sleeve 112, thereby improving the sealing performance of the connection between the upper sleeve 111 and the lower sleeve 112, thereby making it possible to more fully remove the excess gas inside the target object.

[0058] Please continue to refer to Figure 1 In some optional embodiments, the side wall through hole 1122 can be arranged on the lower sleeve 112.

[0059] In the above implementation process, by arranging the side wall through hole 1122 on the lower sleeve 112, the distance between the side wall through hole 1122 and the second end of the sleeve 110 is shortened, thereby making it possible to more fully extract the excess gas inside the target object.

[0060] Please continue to refer to Figure 1 In some optional embodiments, the mechanism may further include a second sealing ring 150. The second sealing ring 150 may be sleeved on the portion of the pressure rod 120 located within the lumen. The inner ring of the second sealing ring 150 may be in sealing contact with the pressure rod 120, and the outer ring of the second sealing ring 150 may be in sealing contact with the inner wall of the lumen.

[0061] The second sealing ring 150 can be sleeved on the sealing portion of the pressure rod 120, such as the sealing portion of the pressure rod 120 described in the previous embodiment. The material of the second sealing ring 150 can also be nitrile rubber, chloroprene rubber, butyl rubber, silicone rubber, fluororubber, etc.

[0062] In the above implementation process, by sleeve-mounting the second sealing ring 150 on the pressure rod 120, the sealing performance between the pressure rod 120 and the inner wall of the tube cavity is improved, thereby making it possible to more fully remove the excess gas inside the target object.

[0063] Please continue to refer to Figure 1 In some optional embodiments, the sleeve 110 may further include an anti-slip layer 113. The anti-slip layer 113 may be laid on the inner wall of the lumen.

[0064] The material of the anti-slip layer 113 may be Teflon or other anti-slip materials.

[0065] In the above implementation process, by laying the anti-slip layer 113 on the inner wall of the lumen, when the sealing pin 20 is placed in the lumen, the anti-slip layer 113 can prevent the sealing pin 20 from falling to the second end of the sleeve 110 prematurely to a certain extent, thereby avoiding the problem of the sealing pin 20 falling to the second end of the sleeve 110 prematurely to a certain extent, thereby hindering the vacuuming of the target object.

[0066] In some optional embodiments, the target object may include a battery cell, and the hole to be sealed may include a battery cell injection hole.

[0067] That is to say, the nailing mechanism 100 provided in each embodiment of the present application can be used to seal the liquid injection hole of the battery cell.

[0068] In the above implementation process, the nailing mechanism 100 is used to seal the liquid injection hole of the battery cell, which to a certain extent solves the problem that the pressure difference between the inside and outside of the battery cell causes the battery aluminum shell to deform and hollow, and the air and gaps inside the battery cause adverse effects on the battery's wetting and charging and discharging performance.

[0069] Please refer to Figure 2 , Figure 2 1 is a schematic diagram of the structure of the nailing device 10 provided in the embodiment of the present application. Based on the same concept, the nailing device 10 provided in the embodiment of the present application may include a frame 200, a cylinder 300 and the nailing mechanism 100 described above. The cylinder 300 is arranged on the frame 200. The output end of the cylinder 300 is connected to the pressure rod 120 and can be configured to drive the pressure rod 120 to move.

[0070] The above implementation process can have the same beneficial effects as the nail inserting mechanism 100 described above, and will not be described in detail here.

[0071] In summary, the nail plugging mechanism 100 and the nail plugging device 10 provided in each embodiment of the present application are sealed in contact between the second end of the sleeve 110 and the target object, and sealed in contact between the pressure rod 120 and the inner wall of the lumen, and then the excess gas inside the lumen and the target object is extracted by the vacuum device 400, and then the sealing nail 20 is pushed out by the pressure rod 120 and enters the hole to be sealed to seal the target object. The excess gas inside the target object is discharged before the target object is sealed. The process quality of the production and manufacturing of such target objects is improved. By arranging the sealing member 130 at the second end of the sleeve 110, the effect of extracting the excess gas inside the target object is further improved. Finally, the process quality of the production and manufacturing of such target objects is further improved. By using the elastic member 140 to connect the sealing member 130 and the second end of the sleeve 110, the pressure between the sealing member 130 and the target object is increased. In addition, the sealing performance of the contact between the second end of the sleeve 110 and the target object is further improved. By dividing the sleeve 110 into a detachable upper sleeve 111 and a lower sleeve 112, the convenience of using the nailing mechanism 100 is improved. By installing the first sealing ring 112 at the connection between the upper sleeve 111 and the lower sleeve 112, the excess gas inside the target object can be more fully extracted. In particular, the nailing mechanism 100 provided in each embodiment of the present application can be used to seal the injection hole of the battery cell, which to a certain extent solves the problem that the pressure difference between the inside and outside of the battery cell causes the aluminum shell of the battery to deform and bulge, and the air and gap inside the battery have an adverse effect on the battery infiltration and charging and discharging performance.

[0072] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A nailing mechanism, characterized in that: comprising a sleeve and a pressure rod; The sleeve has a lumen; The first end of the sleeve has a first pipe opening, and the first pipe opening is used for the pressure rod to enter the tube cavity so that the pressure rod is in sealing contact with the inner wall of the tube cavity; the second end of the sleeve has a second pipe opening, and the second pipe opening is used for pre-placing a sealing pin and for the sealing pin to be pushed out by the pressure rod so that the sealing pin can seal the hole to be sealed on the target object; The second end of the sleeve is configured to be in sealing contact with the periphery of the hole to be sealed on the target object; The side wall of the sleeve is provided with a side wall through hole, one end of the side wall through hole is communicated with the tube cavity, and the other end of the side wall through hole is used to be connected to a vacuum extraction device; The pressure rod is configured to move toward the second end of the sleeve and push out the sealing pin when the lumen is evacuated to a vacuum state by the vacuum extraction device.

2. The nailing mechanism according to claim 1, characterized in that: The mechanism also includes a seal; One end of the sealing member is sealingly connected to the second end of the sleeve, and the other end of the sealing member is used for sealingly contacting the periphery of the hole to be sealed on the target object; The sealing member is provided with a sealing member through hole communicated with the second pipe opening, and the sealing member through hole is used for allowing the sealing pin to be pushed out by the pressure rod.

3. The nailing mechanism according to claim 2, characterized in that: The mechanism also includes an elastic member; One end of the elastic member is sealingly connected to the second end of the sleeve, and the other end of the elastic member is sealingly contacted with the sealing member.

4. The nailing mechanism according to claim 1, characterized in that: The sleeve comprises an upper sleeve and a lower sleeve; The upper sleeve and the lower sleeve are detachably connected; The first end of the sleeve is located on an end of the upper sleeve away from the lower sleeve, and the second end of the sleeve is located on an end of the lower sleeve away from the upper sleeve.

5. The nailing mechanism according to claim 4, characterized in that: The sleeve also includes a first sealing ring; The first sealing ring is sleeved at the connection between the upper sleeve and the lower sleeve, and is sealed and connected to the upper sleeve and the lower sleeve respectively.

6. The nailing mechanism according to claim 4, characterized in that: The side wall through hole is arranged on the lower sleeve.

7. The nailing mechanism according to claim 1, characterized in that: The mechanism also includes a second sealing ring; The second sealing ring is sleeved on the portion of the pressure rod located within the tube cavity; The inner ring of the second sealing ring is in sealing contact with the pressure rod, and the outer ring of the second sealing ring is in sealing contact with the inner wall of the tube cavity.

8. The nailing mechanism according to claim 1, characterized in that: The sleeve also includes an anti-slip layer; The anti-slip layer is laid on the inner wall of the tube cavity.

9. The nailing mechanism according to any one of claims 1 to 8, characterized in that: The target object includes a battery cell; The hole to be sealed includes a battery cell injection hole.

10. A nailing device, characterized in that: It comprises a frame, a cylinder and a nailing mechanism as claimed in any one of claims 1 to 9; The cylinder is arranged on the frame; The output end of the cylinder is connected to the pressure rod and is configured to drive the pressure rod to move.

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