Nail suction pipe and nail feeding device

Abstract

The utility model provides a nail suction pipe and a nail feeding device, and belongs to the technical field of battery production. The nail suction tube comprises: a tube body; the pipe body is provided with a nail suction cavity used for sucking a sealing nail through negative pressure, one end of the nail suction cavity is an inlet end, and the other end of the nail suction cavity is an outlet end. One end of the sealing nail is a large-head end, and the other end is a small-head end; the diameter of the large-head end of the sealing nail is the same as that of the nail suction cavity; a grid structure is arranged in the nail suction cavity and provided with at least one crooked nail hole, the diameter of the crooked nail hole is larger than that of the small end and smaller than that of the large end, and the distance between the axis of the crooked nail hole and the axis of the nail suction cavity is larger than zero. According to the nail suction pipe, the negative pressure value difference can be generated in the positive entering state and the negative entering state of the sealing nail, the positive and negative conditions of the sealing nail can be judged by judging the negative pressure value, and the nail suction pipe is simple in structure, low in cost and small in implementation difficulty.

Description

Technical Field

[0001] The present application relates to the technical field of lithium battery production, and in particular to a nail suction tube and a nail feeding device. Background Art

[0002] In the production process of lithium batteries, liquid injection is a very important step. After the liquid injection is completed, the lithium battery needs to enter the oven for battery formation. In order to prevent the electrolyte in the battery from volatilizing in the high temperature during the formation process, affecting the actual infiltration effect of the battery and thus affecting the quality of the battery, it is necessary to insert a glue nail into the liquid injection hole for sealing.

[0003] The nail feeding device in the related art usually uses a negative pressure suction tube to absorb the plastic nails, but it is unable to detect the positive and negative conditions of the plastic nails. Utility Model Content

[0004] The present application provides a nail suction tube and a nail feeding device, which can solve the problem that the nail feeding device cannot detect the front and back conditions of the rubber nails.

[0005] The technical solution is as follows:

[0006] In one aspect, a nail-absorbing tube is provided, comprising: a tube body;

[0007] The tube body has a nail suction cavity for negative pressure adsorption of the sealing nail, one end of the nail suction cavity is an inlet end, and the other end of the nail suction cavity is an outlet end;

[0008] One end of the sealing nail is a large end, and the other end is a small end; the diameter of the large end of the sealing nail is the same as the diameter of the nail suction cavity;

[0009] A grid structure is provided in the nail suction cavity, and the grid structure is provided with at least one crooked nail hole. The diameter of the at least one crooked nail hole is larger than the diameter of the small head end and smaller than the diameter of the large head end, and the distance between the axis of the crooked nail hole and the axis of the nail suction cavity is greater than zero.

[0010] In some embodiments, the grid structure includes at least one purlin, both ends of the at least one purlin are respectively connected to the inner wall of the nail-absorbing cavity, and the at least one purlin divides the nail-absorbing cavity into at least two of the crooked nail holes.

[0011] In some embodiments, the edge of the surface of the at least one purlin facing the inlet end is provided with a chamfered structure, and when the small head end contacts the surface of the at least one purlin facing the inlet end, the chamfered structure can guide the small head end to the at least one crooked nail hole.

[0012] In some embodiments, the number of the purlin is one, and the purlin is arranged along a diameter of the nail-absorbing cavity to divide the nail-absorbing cavity into the two crooked nail holes;

[0013] A protruding structure is respectively provided on the inner wall of the nail-absorbing cavity corresponding to the two crooked nail holes, and the protruding structure is used to support the edge of the large head end.

[0014] In some embodiments, there are two purlins, which are perpendicular to each other and divide the nail-absorbing cavity into four crooked nail holes.

[0015] In some embodiments, the nail-absorbing tube further includes a connecting flange connected to the outlet end.

[0016] In some embodiments, the shape of the surface of the grid structure facing the inlet end is the same as the shape of the end surface of the large head end.

[0017] On the other hand, a nail feeding device is provided, which includes the nail suction tube described in the present application.

[0018] In some embodiments, the nail feeding device further includes a negative pressure component, and the negative pressure component includes a negative pressure generator and a negative pressure sensor;

[0019] The negative pressure generator is connected to the outlet end, and the negative pressure generator is used to draw air from the outlet end; the negative pressure sensor is located in at least one of the negative pressure generator and the outlet end, and the negative pressure sensor is used to detect the negative pressure value in at least one of the negative pressure generator and the outlet end.

[0020] In some embodiments, the negative pressure component also includes a controller, which is connected to the negative pressure sensor. The controller is used to receive the negative pressure value transmitted by the negative pressure sensor. When the negative pressure value is greater than or equal to the target value, the sealing pin is determined to be in the forward direction; when the negative pressure value is less than the target value, the sealing pin is determined to be in the reverse direction.

[0021] The beneficial effects of the technical solution provided by this application include at least:

[0022] The nail suction tube of the present application has a grid structure in the nail suction cavity, and the grid structure has a crooked nail hole with a diameter between the big head end and the small head end. When the sealing nail enters in the forward direction, the big head end can completely block the nail suction cavity, the air suction of the nail suction cavity is blocked, and the internal negative pressure value increases. When the sealing nail enters in the reverse direction, the small head end will be inserted into the crooked nail hole, causing the big head end to tilt, and the big head end cannot completely block the nail suction cavity. The nail suction cavity can continue to absorb air through the gap around the big head end, and the internal negative pressure value will not increase. Therefore, a difference in negative pressure values ​​can be generated in the two states of the sealing nail entering in the forward direction and the reverse direction. By judging the high and low negative pressure values, the positive and negative conditions of the sealing nail can be judged. The structure is simple, the cost is low, and the implementation difficulty is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a schematic structural diagram of a nail suction tube provided in an embodiment of the present application;

[0025] Figure 2 This is a schematic diagram of the structure of the nail suction tube provided in an embodiment of the present application when the sealing nail is in the forward direction;

[0026] Figure 3 This is a schematic structural diagram of the nail suction tube provided in an embodiment of the present application when the sealing nail is reversed;

[0027] Figure 4 This is a schematic structural diagram of a nail suction tube provided by another embodiment of the present application when the sealing nail is in the forward direction;

[0028] Figure 5 This is a schematic structural diagram of a nail suction tube provided by another embodiment of the present application when the sealing nail is reversed;

[0029] Figure 6 This is a schematic structural diagram of a nail suction tube provided in another embodiment of the present application;

[0030] Figure 7 is a structural schematic diagram of the grid structure provided in an embodiment of the present application;

[0031] Figure 8 is a structural schematic diagram of a grid structure provided by another embodiment of the present application;

[0032] Figure 9 is a structural schematic diagram of a grid structure provided by another embodiment of the present application;

[0033] Figure 10It is a structural schematic diagram of the nail feeding device provided in an embodiment of the present application.

[0034] The reference numerals in the figures represent respectively:

[0035] 100, nail suction tube;

[0036] 1. Pipe body;

[0037] 11. Nail suction cavity; 1101. Inlet end; 1102. Outlet end; 12. Grille structure; 121. Crooked nail hole; 122. Purlin; 123. Chamfered structure; 124. Protruding structure;

[0038] 2. Connecting flange;

[0039] 200, Sealing nails;

[0040] 3. Big end;

[0041] 4. Small end;

[0042] 300, negative pressure component;

[0043] 5. Negative pressure generator;

[0044] 6. Negative pressure sensor;

[0045] 7. Controller. DETAILED DESCRIPTION

[0046] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0047] In the description of this application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached drawings. Figure 1 The orientation or positional relationship shown is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on this application.

[0048] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those skilled in the art.

[0049] In related technologies, in order to solve the problem that the needle tube vacuum adsorption nail feeding device cannot detect the front and back conditions of the glue nails, an additional visual detection device is adopted. After the needle tube adsorbs the glue nails, the visual detection device is used to confirm the posture of the glue nails. However, this increases costs and also increases the communication trigger time, affecting the production efficiency of the battery production line.

[0050] Therefore, the present application provides a nail suction tube, which can generate a difference in negative pressure values ​​when the sealing nail enters the nail suction tube in the forward direction and enters the ceiling suction tube in the reverse direction. By judging the high and low negative pressure values, the positive and negative conditions of the sealing nail can be judged. The structure is simple, the cost is low, and the implementation difficulty is low.

[0051] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0052] On the one hand, combined with Figure 1 、 Figure 2 and Figure 3 As shown, this embodiment provides a nail-absorbing tube 100 , which includes a tube body 1 .

[0053] The tube body 1 has a nail absorption cavity 11 for negative pressure adsorption of the sealing nail 200, one end of the nail absorption cavity 11 is an inlet end 1101, and the other end of the nail absorption cavity 11 is an outlet end 1102; one end of the sealing nail 200 is a large head end 3, and the other end is a small head end 4; the diameter of the large head end 3 of the sealing nail 200 is the same as the diameter of the nail absorption cavity 11.

[0054] A grid structure 12 is provided in the nail suction cavity 11, and the grid structure 12 is provided with at least one crooked nail hole 121. The diameter of at least one crooked nail hole 121 is larger than the diameter of the small head end 4 and smaller than the diameter of the large head end 3, and the distance between the axis of the crooked nail hole 121 and the axis of the nail suction cavity 11 is greater than zero.

[0055] The nail suction tube 100 of this embodiment has a grid structure 12 in the nail suction cavity 11, and the grid structure 12 has a crooked nail hole 121 with a diameter between the big head end 3 and the small head end 4. When the sealing nail 200 enters in the forward direction, the big head end 3 can completely block the nail suction cavity 11, the air suction of the nail suction cavity 11 is blocked, and the internal negative pressure value increases. When the sealing nail 200 enters in the reverse direction, the small head end 4 will be inserted into the crooked nail hole 121, causing the big head end 3 to tilt, and the big head end 3 cannot completely block the nail suction cavity 11. The nail suction cavity 11 can continue to absorb air through the gap around the big head end 3, and the internal negative pressure value will not increase. Therefore, a difference in negative pressure values ​​can be generated in the two states of the sealing nail 200 entering in the forward direction and in the reverse direction. By judging the high and low negative pressure values, the positive and negative conditions of the sealing nail 200 can be judged. The structure is simple, the cost is low, and the implementation difficulty is small.

[0056] In this embodiment, the diameter of the crooked nail hole 121 is between the diameters of the large end 3 and the small end 4, ensuring that the small end 4 can be inserted into the crooked nail hole 121 without leaking the large end 3. Furthermore, the axis of the crooked nail hole 121 and the axis of the nail-absorbing cavity 11 are spaced apart by a distance greater than zero, meaning that the axes of the crooked nail hole 121 and the nail-absorbing cavity 11 do not coincide. Insertion of the small end 4 into the crooked nail hole 121 inevitably causes the sealing nail 200 to tilt, thereby tilting the large end 3 of the sealing nail 200 and preventing it from blocking the nail-absorbing cavity 11.

[0057] In some possible implementations, the sealing pin 200 is made of a plastic material, including but not limited to polyamide (also known as nylon), polycarbonate (PC), fiberglass (FG), polyethylene (PE), polyether, polyethylene glycol terephthalate (PET), polymethyl methacrylate (PMMA), polypropylene, polystyrene (PS), polyvinyl chloride (PVC), etc. Any one of the above materials or any combination of several of them can be used to form this embodiment.

[0058] Combine Figure 2 、 Figure 4 and Figure 5 As shown, in some embodiments, the grid structure 12 includes at least one purlin 122 , both ends of the at least one purlin 122 are respectively connected to the inner wall of the nail absorption cavity 11 , and the at least one purlin 122 divides the nail absorption cavity 11 into at least two crooked nail holes 121 .

[0059] Through the above arrangement, the grille structure 12 formed by at least one purlin 122 is used to divide the nail suction cavity 11 into at least two crooked nail holes 121. The grille structure 12 formed by the purlins 122 has a small flow resistance area, and has little impact on the air circulation in the nail suction cavity 11. Moreover, the grille structure 12 formed by the purlins 122 can divide the nail suction cavity 11 into multiple crooked nail holes 121.

[0060] Combine Figure 6 As shown, in some embodiments, the edge of the surface of at least one purlin 122 facing the inlet end 1101 is provided with a chamfered structure 123, and when the small head end 4 contacts the surface of at least one purlin 122 facing the inlet end 1101, the chamfered structure 123 can guide the small head end 4 to at least one crooked nail hole 121.

[0061] Through the above arrangement, a chamfered structure 123 is designed on the surface of the purlin 122 facing the inlet end 1101, so that the surface of the purlin 122 facing the inlet end 1101 has a smaller plane. When the small head end 4 of the sealing nail 200 enters, if it directly abuts against the flat area, there is a certain probability that the sealing nail 200 will not be skewed. By designing the above-mentioned chamfered structure 123, the purlin 122 only has a smaller flat surface in the middle, or the chamfered structure 123 can transform the entire surface of the purlin 122 into a diamond shape, completely replacing the flat area. The inclined surface transformed by the chamfered structure 123 can guide the small head end 4 of the sealing nail 200, so that the small head end 4 can be smoothly inserted into the crooked nail hole 121, and the entire sealing nail 200 will be skewed, and the entire nail suction cavity 11 will not be blocked.

[0062] Combine Figure 4 As shown, in some embodiments, the number of the purlin 122 is one, and the purlin 122 is arranged along a diameter of the nail-absorbing cavity 11 to separate the nail-absorbing cavity 11 into two crooked nail holes 121 .

[0063] A protruding structure 124 is provided on the inner wall of the nail-absorbing cavity 11 corresponding to the two crooked nail holes 121 , and the protruding structure 124 is used to support the edge of the big head end 3 .

[0064] With this arrangement, only one purlin 122 is required within the nail-absorbing cavity 11. This, combined with two raised structures 124 on the inner wall of the cavity 11, ensures that the sealing nail 200 blocks the cavity 11 when entering in the forward direction, while the sealing nail 200 tilts and does not block the cavity 11 when entering in the reverse direction. A single purlin 122 provides a smaller flow-blocking area and a simpler structure.

[0065] Combine Figure 2 As shown, in some embodiments, there are two purlins 122 , and the two purlins 122 are perpendicular to each other, dividing the nail-absorbing cavity 11 into four crooked nail holes 121 .

[0066] Through the above arrangement, the two purlins 122 cross each other in the nail suction cavity 11 to form a cross-shaped grid structure 12. Four crooked nail holes 121 can be formed by utilizing the grid structure 12. At the same time, the cross-shaped grid structure 12 can provide better support for the sealing nails 200 entering in the forward direction, thereby preventing the sealing nails 200 entering in the forward direction from being accidentally skewed and causing distortion in the forward and reverse detection.

[0067] Combine Figure 1 As shown, in some embodiments, the nail suction pipe 100 further includes a connecting flange 2, which is connected to the outlet end 1102. By using the connecting flange 2, the ceiling pipe of this embodiment can be connected to the negative pressure assembly 300 or other nail feeding devices.

[0068] Combine Figure 7 、 Figure 8 and Figure 9 As shown, in some embodiments, the shape of the surface of the grid structure 12 facing the inlet end 1101 is the same as the end surface shape of the large end 3. Therefore, the grid structure 12 can better support the sealing nail 200 entering in the forward direction, preventing the sealing nail 200 from accidentally tilting and causing distortion in the forward and reverse detection.

[0069] For example, Figure 7 As shown, the surface shape of the grid structure 12 and the end surface shape of the large head end 3 are both planar; Figure 8 As shown, the surface shape of the grid structure 12 is concave, and the end surface shape of the large head end 3 is convex; Figure 9 As shown, the surface shape of the grid structure 12 is convex, and the end surface shape of the large head end 3 is concave.

[0070] On the other hand, this embodiment provides a nail feeding device, which includes the nail suction tube 100 of the present application.

[0071] The nail feeding device of this embodiment adopts the nail suction tube 100 of the present application and has all the beneficial technical effects of all the embodiments herein.

[0072] Combine Figure 10 As shown, in some embodiments, the nail feeding device further includes a negative pressure component 300 , and the negative pressure component 300 includes a negative pressure generator 5 and a negative pressure sensor 6 .

[0073] The negative pressure generator 5 is connected to the outlet end 1102, and the negative pressure generator 5 is used to draw air from the outlet end 1102; the negative pressure sensor 6 is located in at least one of the negative pressure generator 5 and the outlet end 1102, and the negative pressure sensor 6 is used to detect the negative pressure value in at least one of the negative pressure generator 5 and the outlet end 1102.

[0074] Through the above arrangement, the nail feeding device can use the negative pressure generator 5 to extract air from the outlet end 1102 of the nail suction chamber 11, suck the sealing nail 200 from the inlet end 1101, and realize the adsorption and transportation of the sealing nail 200. After the sealing nail 200 is sucked into the nail suction chamber 11, the negative pressure sensor 6 can detect the negative pressure value of the negative pressure generator 5 or the outlet end 1102. If the negative pressure value is large, it means that the sealing nail 200 completely blocks the nail suction chamber 11, the sealing nail 200 is in the forward direction, and the transportation of the sealing nail 200 can continue; if the negative pressure value is small, it means that the sealing nail 200 cannot block the nail suction chamber 11, the sealing nail 200 is in the reverse direction, and the sealing nail 200 needs to be ejected and re-absorbed.

[0075] Combine Figure 10 As shown, in some embodiments, the negative pressure component 300 also includes a controller 7, which is connected to the negative pressure sensor 6. The controller 7 is used to receive the negative pressure value transmitted by the negative pressure sensor 6. When the negative pressure value is greater than or equal to the target value, the sealing nail 200 is determined to be in the forward direction; when the negative pressure value is less than the target value, the sealing nail 200 is determined to be in the reverse direction.

[0076] Through the above arrangement, the controller 7 can receive the negative pressure value detected by the negative pressure sensor 6 and determine whether the sealing nail 200 is in the forward or reverse direction based on the negative pressure value. This arrangement is simple in structure, easy to implement, and low in cost. Furthermore, the controller 7 only needs to determine the difference between the negative pressure value detected by the negative pressure sensor 6 and the target negative pressure value, without requiring any information processing. This can be implemented using a simple algorithm disclosed in the relevant art, without requiring any modification to the computer program.

[0077] It should be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0078] In this document, "several" and "at least one" refer to one or more, while "multiple" and "at least two" refer to two or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0079] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0080] In the description of this specification, reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application.

[0081] The above description is merely an embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A nail suction tube, characterized in that: The nail-absorbing tube (100) comprises: a tube body (1); The tube body (1) has a nail suction cavity (11) for negative pressure adsorption of the sealing nail (200), one end of the nail suction cavity (11) is an inlet end (1101), and the other end of the nail suction cavity (11) is an outlet end (1102); One end of the sealing nail (200) is a large end (3), and the other end is a small end (4); the diameter of the large end (3) of the sealing nail (200) is the same as the diameter of the nail suction cavity (11); A grid structure (12) is provided in the nail suction cavity (11), and the grid structure (12) is provided with at least one crooked nail hole (121). The diameter of the at least one crooked nail hole (121) is larger than the diameter of the small end (4) and smaller than the diameter of the large end (3), and the distance between the axis of the crooked nail hole (121) and the axis of the nail suction cavity (11) is greater than zero.

2. The nail suction tube according to claim 1, characterized in that: The grid structure (12) comprises at least one purlin (122), two ends of the at least one purlin (122) are respectively connected to the inner wall of the nail-absorbing cavity (11), and the at least one purlin (122) divides the nail-absorbing cavity (11) into at least two crooked nail holes (121).

3. The nail suction tube according to claim 2, characterized in that: The edge of the surface of the at least one purlin (122) facing the inlet end (1101) is provided with a chamfered structure (123); when the small end (4) contacts the surface of the at least one purlin (122) facing the inlet end (1101), the chamfered structure (123) can guide the small end (4) toward the at least one crooked nail hole (121).

4. The nail suction tube according to claim 2, characterized in that: The number of the purlin (122) is one, and the purlin (122) is arranged along a diameter of the nail-absorbing cavity (11), dividing the nail-absorbing cavity (11) into two crooked nail holes (121); The inner walls of the nail-absorbing cavities (11) corresponding to the two crooked nail holes (121) are respectively provided with protruding structures (124), and the protruding structures (124) are used to support the edge of the large head end (3).

5. The nail suction tube according to claim 2, characterized in that: There are two purlins (122), and the two purlins (122) are perpendicular to each other, dividing the nail-absorbing cavity (11) into four crooked nail holes (121).

6. The nail suction tube according to claim 1, characterized in that: The nail-absorbing tube (100) further comprises a connecting flange (2), and the connecting flange (2) is connected to the outlet end (1102).

7. The nail suction tube according to any one of claims 1 to 6, characterized in that: The shape of the surface of the grid structure (12) facing the inlet end (1101) is the same as the end face shape of the large head end (3).

8. A nail feeding device, characterized in that: The nail feeding device comprises the nail suction tube (100) according to any one of claims 1 to 7.

9. The nail feeding device according to claim 8, characterized in that: The nail feeding device further comprises a negative pressure component (300), wherein the negative pressure component (300) comprises a negative pressure generator (5) and a negative pressure sensor (6); The negative pressure generator (5) is connected to the outlet end (1102), and the negative pressure generator (5) is used to extract air from the outlet end (1102); the negative pressure sensor (6) is located in at least one of the negative pressure generator (5) and the outlet end (1102), and the negative pressure sensor (6) is used to detect the negative pressure value in at least one of the negative pressure generator (5) and the outlet end (1102).

10. The nail feeding device according to claim 9, characterized in that: The negative pressure component (300) further includes a controller (7), which is connected to the negative pressure sensor (6). The controller (7) is used to receive the negative pressure value transmitted by the negative pressure sensor (6), and when the negative pressure value is greater than or equal to the target value, it is determined that the sealing nail (200) is in the forward direction, and when the negative pressure value is less than the target value, it is determined that the sealing nail (200) is in the reverse direction.

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