Hand riveter

Abstract

The utility model relates to the technical field of riveting tools, in particular to a hand riveter. The automatic riveting machine comprises a machine shell, a power structure, a riveting structure and an adsorption structure. The machine shell is provided with a rivet insertion opening. The power structure is located in the machine shell and comprises a power piece and a transmission assembly, the transmission assembly comprises a gear structure and a lead screw nut structure, and the lead screw nut structure comprises a lead screw and a nut; the rivet pulling structure is located on the machine shell and connected with the lead screw to move linearly. The adsorption structure comprises a rivet arranging pipe and a negative pressure generator, one end of the rivet arranging pipe is communicated with the negative pressure generator, the other end of the rivet arranging pipe penetrates out of the lead screw nut structure and the rivet pulling structure and is communicated with the rivet inserting opening, and a first sealing structure is arranged between the rivet arranging pipe and a working opening of the negative pressure generator. In this way, the electrolyte entering the negative pressure generator cannot enter the power structure through the first sealing structure to corrode the power structure, the internal structure in the hand riveter is protected, and therefore the service life of the hand riveter is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of riveting tools, and in particular to a rivet gun. Background Technology

[0002] After the individual battery cells are filled with electrolyte, the filling port needs to be sealed. The sealing method is to use a rivet gun to rivet the cells. However, during the rivet process, as the broken rivet rods are collected, a small amount of electrolyte may enter the rivet gun's collecting cylinder along with the broken rivet rods. The gap between the collecting cylinder and the guide tube will cause the electrolyte in the collecting cylinder to enter the rivet gun through the gap, corroding the internal parts of the rivet gun, causing instability and reduced lifespan of the rivet gun.

[0003] Therefore, there is an urgent need for a rivet gun to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a rivet gun that can prevent electrolyte from entering the rivet gun and improve its service life.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A rivet gun is provided, comprising:

[0007] The casing has rivet insertion slots;

[0008] A power structure is located inside the housing. The power structure includes a power component and a transmission assembly. The transmission assembly includes a gear structure and a lead screw and nut structure. The lead screw and nut structure includes a lead screw and a nut. The nut is threadedly connected to the lead screw. The gear structure is connected to the nut to drive the lead screw to move linearly.

[0009] A riveting structure is located in the housing, and the riveting structure is connected to the lead screw for linear movement;

[0010] The adsorption structure includes a nail-pile tube and a negative pressure generator. One end of the nail-pile tube is connected to the negative pressure generator, and the other end of the nail-pile tube passes through the lead screw nut structure and the riveting structure and is connected to the rivet insertion port. A first sealing structure is provided between the nail-pile tube and the working port of the negative pressure generator.

[0011] This utility model has at least the following beneficial effects:

[0012] Because a first sealing structure is provided between the nail tube and the working port of the negative pressure generator, the gap between the nail tube and the working port of the negative pressure generator can be eliminated. Since the gap is eliminated, the electrolyte entering the negative pressure generator will not enter the power structure through the first sealing structure and corrode the power structure, thus protecting the internal structure of the rivet gun and improving the service life of the rivet gun. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0014] Figure 1 A first sectional view of the rivet gun provided in an embodiment of this utility model;

[0015] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0016] Figure 3 A side view of a rivet gun provided in an embodiment of this utility model;

[0017] Figure 4 This is a second cross-sectional view of the rivet gun provided in an embodiment of the present invention.

[0018] In the picture:

[0019] 1. Housing; 11. Housing body; 12. Gun holster; 121. Protective sleeve; 122. Mounting sleeve; 13. Threaded limit ring; 14. Set screw; 2. Power structure; 21. Power component; 22. Lead screw; 23. Nut; 24. Driven gear; 25. Drive gear; 3. Riveting structure; 31. Clamping claw; 32. Push rod; 33. Pull head sleeve; 34. Push rod pull sleeve; 35. Elastic component; 4. Adsorption structure; 41. Nail tube; 42. Negative pressure generator; 5. First sealing structure; 6. Second sealing structure; 7. Pressure detection mechanism; 71. Pressure sensor; 72. Pressure bearing sleeve; 8. Gun nozzle; 9. Third sealing structure. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0024] To prevent electrolyte from entering the rivet gun during riveting and causing corrosion to the internal parts, thus affecting its use, this embodiment provides a rivet gun that can prevent electrolyte from entering the rivet gun and improve its service life.

[0025] like Figure 1 and Figure 2As shown, the rivet gun includes a housing 1, a power structure 2, a rivet pulling structure 3, and an adsorption structure 4. The housing 1 has a rivet insertion port for the rivet shank to pass through into the rivet gun. The power structure 2 is located inside the housing 1 to provide the pulling force for pulling the rivet. The power structure 2 includes a power component 21 and a transmission assembly connected to the power component 21. The transmission assembly includes a gear structure and a lead screw and nut structure. The lead screw and nut structure includes a lead screw 22 and a nut 23. The nut 23 is threadedly connected to the lead screw 22. The gear structure is connected to the nut 23 to drive the lead screw 22 to move linearly. The rivet pulling structure 3 is located inside the housing 1 and is connected to the lead screw 22 for linear movement. The adsorption structure 4 includes a rivet tube 41 and a negative pressure generator 42. One end of the rivet tube 41 is connected to the negative pressure generator 42, and the other end of the rivet tube 41 passes through the lead screw and nut structure and the rivet pulling structure 3 and is connected to the rivet insertion port. A first sealing structure 5 is provided between the working port of the rivet tube 41 and the negative pressure generator 42.

[0026] Because a first sealing structure 5 is provided between the nail tube 41 and the working port of the negative pressure generator 42, the gap between the nail tube 41 and the working port of the negative pressure generator 42 can be eliminated. Since the gap is eliminated, the electrolyte entering the negative pressure generator 42 will not enter the power structure 2 through the first sealing structure 5 and corrode the power structure 2, thus protecting the internal structure of the rivet gun and improving the service life of the rivet gun.

[0027] For example, the first sealing structure 5 includes a Y-shaped sealing ring. The Y-shaped sealing ring effectively prevents electrolyte from entering the power structure 2. Compared to ordinary rubber sealing rings, the Y-shaped sealing ring provides a better sealing effect.

[0028] As can be seen from the working principle of the Y-ring seal, the lip of the Y-ring must face the side with higher pressure to function properly during installation. Therefore, the Y-ring seal can only function in one direction. The negative pressure generator 42 causes the pressure at the tail of the nail-pile tube 41 to be greater than the pressure at the head of the nail-pile tube 41. Therefore, the opening of the Y-ring seal is positioned facing the negative pressure generator 42 to ensure a good seal.

[0029] In some embodiments, such as Figure 1 , Figure 3 and Figure 4As shown, the rivet insertion port is also equipped with a nozzle 8, which is inserted into the housing 1. The nozzle 8 has a through hole for the rivet rod to pass through and be clamped by the riveting structure 3. A second sealing structure 6 is provided at the end of the nozzle 8 facing away from the housing 1. Specifically, a groove is provided at the end of the nozzle 8 facing away from the housing 1 to accommodate the second sealing structure 6. The second sealing structure 6 is at least partially located in the groove, thus achieving the purpose of the second sealing structure 6 abutting against the battery casing. The second sealing structure 6 contacts both the battery casing and the nozzle 8, which prevents the electrolyte on the outside of the second sealing structure 6 from entering the riveting gun, further preventing electrolyte from entering the riveting gun and reducing the probability of electrolyte entering the riveting gun.

[0030] For example, the second sealing structure 6 includes a rubber sealing ring. The rubber sealing ring can withstand friction and vibration under dynamic operating conditions, exhibiting good wear resistance and fatigue resistance, thereby extending the service life of the seal and reducing the assembly cost of the battery pack.

[0031] In some embodiments, combined with Figure 1 and Figure 4 As shown, the rivet gun also includes a pressure detection mechanism 7. The housing 1 includes a housing body 11, a gun sleeve 12, and a threaded limiting ring 13. The gun sleeve 12 extends into the housing body 11, and the rivet structure 3 is located inside the gun sleeve 12. The rivet insertion port is located in the gun sleeve 12. The pressure detection mechanism 7 is located in the housing body 11, and the lead screw 22 passes through the pressure detection mechanism 7. A third sealing structure 9 is provided between the pressure detection mechanism 7 and the lead screw 22. The third sealing structure 9 can prevent electrolyte from entering the power structure 2 through the rivet insertion port of the housing 1, thus preventing corrosion of the internal parts of the rivet gun.

[0032] The holster 12 is connected to the housing body 11 via a threaded retaining ring 13. The holster 12 includes a protective sleeve 121 and a mounting sleeve 122 connected to the protective sleeve 121. The mounting sleeve 122 is located within the area enclosed by the threaded retaining ring 13. The diameter of the mounting sleeve 122 is larger than the diameter of the mounting groove of the threaded retaining ring 13, thus limiting the mutual positioning between the side wall of the mounting sleeve 122 and the bottom of the mounting groove. The side wall of the mounting groove has threads, and the housing body 11 has external threads. The threaded retaining ring 13 is threadedly connected to the housing body 11. When the lead screw 22 pulls the rivet rod, the rivet rod also applies a reaction force to the housing body 11. By detecting the reaction force on the housing body 11, the tensile force on the rivet rod can be obtained, thus obtaining the breaking force when the rivet rod breaks. The outer side wall of the holster 12 has a limiting surface, and the threaded retaining ring 13 has a set screw 14 that abuts against the limiting surface to prevent the holster 12 from rotating relative to the threaded retaining ring 13.

[0033] In some embodiments, the adsorption structure 4 further includes a nail collecting cylinder, the working port of which is connected to one end of the nail dispensing tube 41, and the negative pressure port of the nail collecting cylinder is connected to the working port of the negative pressure generator 42. In this way, the negative pressure generator 42 can generate negative pressure inside the nail collecting cylinder to adsorb the broken rivet rod into the nail collecting cylinder.

[0034] When the rivet gun picks up the rivet and reaches the rivet station, it initiates a pre-tightening action upon receiving a pre-tightening start command. Pressure sensor 71 monitors and collects the pre-tightening force in real time. Once the pre-tightening force reaches the set value, pre-tightening is complete, and a pre-tightening completion signal is output. When the rivet gun receives a break-off command, it breaks the rivet shank. Pressure sensor 71 monitors and collects the break-off force in real time. After break-off, the rivet gun outputs a break-off completion signal. When the rivet gun receives a rivet retraction command, negative pressure generator 42 operates to draw the broken rivet shank into the rivet collection cylinder to complete the rivet retraction. After retraction, the rivet gun automatically resets and outputs a reset completion signal.

[0035] In some other embodiments, the nail tube 41 is connected to the outside, and the negative pressure generator 42 generates negative pressure at the tail end of the nail tube 41, which attracts the broken rivet rod to the tail end and then discharges it directly to the outside.

[0036] Furthermore, such as Figure 1 and Figure 4 As shown, the pressure detection mechanism 7 includes a pressure sensor 71 and a pressure-bearing sleeve 72. The pressure-bearing sleeve 72 is disposed between the pressure sensor 71 and the gun sleeve 12. Both the pressure sensor 71 and the pressure-bearing sleeve 72 are annular structures. Both the pressure sensor 71 and the pressure-bearing sleeve 72 are sleeved on the outer periphery of the lead screw 22, and the pressure-bearing sleeve 72 can contact the gun sleeve 12. The pressure sensor 71 and the pressure-bearing sleeve 72 are spaced apart from the lead screw 22 to avoid pressure detection errors caused by the movement of the lead screw 22. In addition, it can also prevent the pressure sensor 71 from being in a state of being squeezed. The pressure sensor 71 only detects pressure when the rivet is pulled. The third sealing structure 9 is disposed between the pressure-bearing sleeve 72 and the lead screw 22. Specifically, the lead screw 22 passes through the pressure sleeve 72 and can move relative to the pressure sleeve 72, and there will be a gap between the two. In order to prevent the electrolyte from flowing through the gap between the pressure sleeve 72 and the lead screw 22 to the lead screw 22, nut 23 and gear structure and causing corrosion, the third sealing structure 9 is set between the pressure sleeve 72 and the lead screw 22 to seal and eliminate the gap.

[0037] For example, the third sealing structure 9 includes an oil seal. The oil seal ensures a good seal and prevents leakage caused by gaps between the pressure sleeve 72 and the lead screw 22 due to prolonged movement of the lead screw 22, thereby improving the overall sealing effect of the rivet gun.

[0038] In some embodiments, the pressure sleeve 72 and the pressure sensor 71 are spaced apart. That is, the pressure sleeve 72 and the pressure sensor 71 are not in contact. This arrangement ensures that the pressure sensor 71 is not compressed when not measuring, thereby improving the detection capability of the pressure sensor 71.

[0039] Specifically, such as Figure 1 As shown, the gear structure includes a driven gear 24 and a driving gear 25. The driving gear 25 meshes with the driven gear 24, and the driven gear 24 is sleeved on and fixedly connected to the nut 23. Optionally, the driven gear 24 and the nut 23 are an integral structure, which ensures that the driven gear 24 will not loosen or separate from the nut 23 during operation. In addition, it reduces assembly steps and improves assembly efficiency.

[0040] In some embodiments, combined with Figure 1 and Figure 4 As shown, the riveting mechanism includes a clamp 31, a push rod 32, a pull head sleeve 33, a push rod pull sleeve 34, and an elastic element 35. The clamp 31 has at least two parts, and in some embodiments, three parts are preferred. The entire riveting mechanism is housed within the cavity formed by the gun sleeve 12. The two ends of the push rod pull sleeve 34 are threadedly connected to the pull head sleeve 33 and the lead screw 22, respectively. Since the push rod pull sleeve 34 and the pull head sleeve 33 are hollow internally, the threaded connection of the push rod pull sleeve 34, the pull head sleeve 33, and the lead screw 22 forms a receiving cavity. The push rod 32, the elastic element 35, and the gripper 31 are located in the receiving chamber, and the end of the pull head sleeve 33 facing the nozzle 8 is provided with an opening for the gripper 31 to extend out, so that the gripper 31 can abut against the nozzle 8. The elastic element 35 is located between the push rod sleeve 34 and the push rod 32. The push rod 32 extends into the push rod sleeve 34 and can move linearly relative to the push rod sleeve 34. The elastic element 35 is compressed and always has the tendency to push the push rod 32 away from the push rod sleeve 34, so as to open the gripper 31.

[0041] For example, the elastic element 35 is a spring.

[0042] When the rivet rod needs to be clamped, the push rod 32 moves towards the clamp 31 to squeeze the clamp 31 so that the clamp 31 is in a slightly open state. At this time, the rivet rod is inserted into the space enclosed by the clamp 31. Then, the power structure 2 is activated to make the screw 22 move linearly away from the clamp 31. In this way, the screw 22 will drive the push rod pull sleeve 34 and the pull head sleeve 33 to also move away from the clamp 31. At this time, the clamp 31 closes under the action of the pull head sleeve 33. The push rod 32 is pushed by the clamp 31 to compress the spring. The clamp 31 clamps the rivet rod and provides a pulling force. When the pulling force is the force that breaks the rivet rod, the rivet rod is broken. The broken rivet rod is directly discharged from the tail of the rivet tube 41 outside the rivet gun.

[0043] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A rivet gun, characterized in that, include: The housing (1) has a rivet insertion port; The power structure (2) is located inside the housing (1). The power structure (2) includes a power component (21) and a transmission assembly. The transmission assembly includes a gear structure and a lead screw and nut structure. The lead screw and nut structure includes a lead screw (22) and a nut (23). The nut (23) is threadedly connected to the lead screw (22). The gear structure is connected to the nut (23) to drive the lead screw (22) to move linearly. A riveting structure (3) is located in the housing (1), and the riveting structure (3) is connected to the lead screw (22) for linear movement; The adsorption structure (4) includes a nail tube (41) and a negative pressure generator (42). One end of the nail tube (41) is connected to the negative pressure generator (42), and the other end of the nail tube (41) passes through the screw nut structure and the riveting structure (3) and is connected to the rivet insertion port. A first sealing structure (5) is provided between the nail tube (41) and the working port of the negative pressure generator (42).

2. The rivet gun according to claim 1, characterized in that, The first sealing structure (5) includes a Y-shaped sealing ring.

3. The rivet gun according to claim 2, characterized in that, The opening of the Y-shaped sealing ring is oriented toward the negative pressure generator (42).

4. The rivet gun according to claim 1, characterized in that, The rivet insertion port is also provided with a nozzle (8), and the end of the nozzle (8) facing away from the housing (1) is provided with a second sealing structure (6).

5. The rivet gun according to claim 4, characterized in that, The second sealing structure (6) includes a rubber sealing ring.

6. The rivet gun according to any one of claims 1-5, characterized in that, The rivet gun also includes a pressure detection mechanism (7). The housing (1) includes a housing body (11) and a gun sleeve (12). The gun sleeve (12) extends into the housing body (11). The rivet structure (3) is located inside the gun sleeve (12). The rivet insertion port is provided in the gun sleeve (12). The pressure detection mechanism (7) is provided in the housing body (11). The lead screw (22) passes through the pressure detection mechanism (7). A third sealing structure (9) is provided between the pressure detection mechanism (7) and the lead screw (22).

7. The rivet gun according to claim 6, characterized in that, The pressure detection mechanism (7) includes a pressure sensor (71) and a pressure-bearing sleeve (72). The pressure-bearing sleeve (72) is disposed between the pressure sensor (71) and the gun shroud (12), and the pressure-bearing sleeve (72) can contact the gun shroud (12). The third sealing structure (9) is disposed between the pressure-bearing sleeve (72) and the lead screw (22).

8. The rivet gun according to claim 7, characterized in that, The pressure-bearing sleeve (72) and the gun holster (12) are spaced apart.

9. The rivet gun according to claim 6, characterized in that, The third sealing structure (9) includes an oil seal.

10. The rivet gun according to any one of claims 1-5, characterized in that, The gear structure includes a driven gear (24) and a driving gear (25). The driving gear (25) meshes with the driven gear (24). The driven gear (24) is sleeved on the nut (23) and fixedly connected to the nut (23).

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