A battery sealing device

Abstract

The present invention provides a battery sealing device, which comprises: a bracket; a lower die assembly fixedly arranged on the bracket and including a pier-sealing lower die for carrying a workpiece; an upper die assembly including a crankshaft, a crank connecting rod, a connecting shaft, a first guide post and a pier-sealing upper die, wherein one end of the crank connecting rod is rotatably sleeved on the crankshaft, the other end of the crank connecting rod is rotatably connected to the first guide post through the connecting shaft, and the pier-sealing upper die is arranged at the other end of the first guide post and approaches or moves away from the pier-sealing lower die along with the reciprocating movement of the first guide post. The battery sealing device described in the present invention can preferably improve the efficiency of battery pier-sealing.

Description

Technical Field

[0001] The present invention relates to the technical field of automation equipment, and particularly to a battery sealing device. Background Art

[0002] In the usage environment of cylindrical batteries, there are limitations on the total height of the batteries. In order to meet the capacity and total height requirements of high-capacity batteries, a caulking process is often added after the battery is sealed to ensure that the total height of the battery is within the standard range. However, in the existing battery caulking technology, the caulking efficiency is relatively low, and there are many defective products caused by inaccurate caulking, which affects the caulking efficiency and production qualification rate of the batteries. Therefore, a technical solution that can solve the above technical problems is needed. Summary of the Invention

[0003] The main technical problem to be solved by the present invention is to provide a battery sealing device that can improve the production qualification rate.

[0004] To solve the above technical problem, one technical solution adopted by the present invention is: to provide a battery sealing device, including:

[0005] A bracket;

[0006] A lower die assembly, fixedly arranged on the bracket, and including a caulking lower die for carrying a workpiece;

[0007] An upper die assembly, including a crankshaft, a crank connecting rod, a connecting shaft, a first guiding column, and a caulking upper die. One end of the crank connecting rod is rotatably sleeved on the crankshaft, and the other end of the crank connecting rod is rotatably connected to the first guiding column through the connecting shaft. One end of the first guiding column is connected to the connecting shaft, and thus, during the rotation of the crankshaft, the first guiding column is driven by the crank connecting rod to reciprocate along the axial direction of the first guiding column. The caulking upper die is arranged at the other end of the first guiding column and approaches or moves away from the caulking lower die along with the reciprocating movement of the first guiding column.

[0008] Further, the connecting shaft is an eccentric shaft;

[0009] The device further includes an adjusting mechanism, connected to the connecting shaft, for adjusting the initial distance between the caulking upper die and the caulking lower die by adjusting the eccentric position of the connecting shaft.

[0010] Even further, the adjusting mechanism includes an eccentric adjusting plate and a pointer, and either the eccentric adjusting plate or the pointer is fixedly connected to the connecting shaft, and the other is fixedly connected to the first guiding column.

[0011] Further, the adjusting mechanism further includes a locking mechanism for locking the connecting shaft and the first guiding post after the eccentric adjusting plate adjusts the position of the connecting shaft body.

[0012] Further, it further includes a guiding seat fixedly connected to the bracket. The guiding seat is provided with a first guiding cavity, and the first guiding post is arranged in the first guiding cavity for defining the axial direction of the first guiding post.

[0013] Furthermore, a first channel extending along the axial direction of the first guiding post is arranged in the first guiding post, and an avoidance groove communicating with the first channel is arranged on the outer peripheral surface of the first guiding post;

[0014] The device further includes a push rod and a pin shaft. Among them, the pin shaft is arranged in the avoidance groove, and the push rod is arranged inside the first channel and the upper end thereof is fixedly connected to the guiding seat through the pin shaft.

[0015] Further, the lower die assembly includes a pier-sealing lower die base;

[0016] The pier-sealing lower die base is a column body provided with a through accommodating cavity. A first annular bearing platform is arranged on the inner wall of the accommodating cavity. The pier-sealing lower die is inserted into the accommodating cavity from one end face of the pier-sealing lower die base and supported on the first annular bearing platform.

[0017] Further, the lower die assembly further includes a pier-sealing lower die bottom plate. Among them, the accommodating cavity provided in the pier-sealing lower die base communicates with the pier-sealing lower die bottom plate and the pier-sealing lower die. An accommodating groove is arranged at the upper end of the pier-sealing lower die bottom plate, and an elastic member is arranged in the accommodating groove. The pier-sealing lower die is provided with a third channel communicating with the accommodating cavity and the accommodating groove, and a second guiding post is arranged in the third channel. The lower end of the second guiding post is connected to the elastic member, and the upper end protrudes from the pier-sealing lower die.

[0018] Furthermore, it further includes a guiding sleeve, and the lower end of the second guiding post is connected to the upper end face of the guiding sleeve.

[0019] Further, the elastic member is a spring and the diameter of the spring is smaller than the diameter of the accommodating cavity.

[0020] The beneficial effects of the present invention are as follows: Different from the prior art, the battery sealing device provided by the present invention includes a bracket, a lower die assembly, and an upper die assembly. The upper die assembly includes a pierce-sealing upper die, a crankshaft, a crank connecting rod, a connecting shaft, and a first guiding column for driving the pierce-sealing upper die. One end of the crank connecting rod is rotatably sleeved on the crankshaft, and the other end of the crank connecting rod is rotatably connected to the first guiding column through the connecting shaft. The pierce-sealing upper die is arranged at the other end of the first guiding column and approaches or moves away from the pierce-sealing lower die along with the reciprocating movement of the first guiding column, thereby completing the pierce-sealing. During this process, the pierce-sealing upper die is quickly driven to approach the pierce-sealing lower die and accurately press against the battery carried by the pierce-sealing lower die, improving the production qualification rate of the pierce-sealing and achieving good results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0022] Figure 1 is a schematic structural diagram of an embodiment of a battery sealing device of the present invention;

[0023] Figure 2 is Figure 1 a schematic cross-sectional structural diagram of the battery sealing device shown along the A-A' direction;

[0024] Figure 3 is a schematic structural diagram of another embodiment of a battery sealing device of the present invention;

[0025] Figure 4 is Figure 3 a schematic enlarged structural diagram of the crankshaft and the crank connecting rod shown;

[0026] Figure 5 is a schematic side view structural diagram of another embodiment of a battery sealing device of the present invention;

[0027] Figure 6 is a schematic application scenario diagram of an embodiment of a battery sealing device of the present invention;

[0028] Figure 7 is a schematic application scenario diagram of another embodiment of a battery sealing device of the present invention;

[0029] Figure 8 is a schematic structural diagram of another embodiment of a battery sealing device of the present invention;

[0030] Figure 9 is Figure 8a cross-sectional view of the lower mold assembly along line BB';

[0031] Figure 10 This is a structural schematic diagram of a lower sealing die in a battery sealing device of the present invention;

[0032] Figure 11 for Figure 10 The schematic diagram of the cross-sectional structure of the pier sealing lower mold is shown. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] The terms "comprise," "comprising," and "having," and any variations thereof, as used herein, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0035] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] Please also see Figure 1 and Figure 2 , Figure 1 This is a structural diagram of an embodiment of a battery sealing device of the present invention. Figure 2 for Figure 1 The battery sealing device is shown as a cross-sectional structural diagram along the AA' direction. In the current embodiment, the battery sealing device provided by the present invention includes a bracket 1, a lower mold assembly 20 and an upper mold assembly 30.

[0037] Among them, the lower die assembly 20 is fixedly arranged on the bracket 1 and includes a pier-sealing lower die 21 for carrying workpieces. The pier-sealing lower die 21 is a structure for directly carrying workpieces, and the size of the pier-sealing lower die 21 is set to match the carried workpieces. Here, no special limitation is imposed on the shape of the pier-sealing lower die 21. For example, the cross-section of the pier-sealing lower die 21 along the direction perpendicular to its radial direction can be circular, square, rectangular, etc., and can be specifically set according to the actual product layout.

[0038] Furthermore, a sewage discharge hole is arranged at the contact end between the pier-sealing lower die 21 and the workpiece, which is used to discharge the redundant electrolyte during the pier-sealing operation or carried by the workpiece itself to avoid damaging the workpiece itself. Among them, the workpieces carried by the pier-sealing lower die 21 at least include batteries.

[0039] The upper die assembly 30 is used to press towards the workpiece carried by the pier-sealing lower die 21 under the drive of an external driving member, thereby completing the pier-sealing operation. Specifically, the upper die assembly 30 includes a crankshaft 31, a crank connecting rod 32, a connecting shaft 33, a first guide post 34, and a pier-sealing upper die 35. Among them, the battery sealing device 100 provided by the present invention further includes the above-mentioned external driving member, the external driving member further includes a motor 2, and the output end of the external driving member is connected to one end of the crankshaft 31, which is used to drive the rotation of the crankshaft 31, and the linkage of the crank connecting rod 32, the connecting shaft 33, and the first guide post 34, thereby driving the pier-sealing upper die 35 to approach or move away from the workpiece carried by the pier-sealing lower die 21, so as to complete the pier-sealing operation of the workpiece. Among them, the crankshaft 31 is rotatably arranged on the bracket 1, and a bearing (not marked) is arranged at the connection between the crankshaft 31 and the bracket to avoid damage to the structure caused by excessive rotational friction between the two.

[0040] Among them, one end of the crank connecting rod 32 is rotatably sleeved on the crankshaft 31, and the other end of the crank connecting rod 32 is rotatably connected to the first guide post 34 through the connecting shaft 33. For example, in an embodiment, the other end of the crank connecting rod 32 can be directly rotatably sleeved on the connecting shaft 33. One end of the first guide post 34 is connected to the connecting shaft 33. Thus, during the rotation of the crankshaft 31, the first guide post 34 is driven by the crank connecting rod 32 to reciprocate along the axis direction of the first guide post 34. The pier-sealing upper die 35 is arranged at the other end of the first guide post 34 and approaches or moves away from the pier-sealing lower die 21 along with the reciprocating movement of the first guide post 34.

[0041] The battery sealing device 100 provided by the present invention includes a bracket 1, a lower die assembly 20, and an upper die assembly 30. During the rotation of the crankshaft 31, the first guide post 34 is driven by the crank connecting rod 32 to reciprocate along the axis direction of the first guide post 34. The pier-sealing upper die 35 is arranged at the other end of the first guide post 34 and approaches or moves away from the pier-sealing lower die 21 along with the reciprocating movement of the first guide post 34. Thus, the pier-sealing can be completed quickly and accurately. During this process, the pier-sealing upper die 35 is quickly driven to approach the pier-sealing lower die 21 and accurately press against the battery carried by the pier-sealing lower die 21, improving the production qualification rate of the pier-sealing and also improving the pier-sealing efficiency of the battery sealing device 100.

[0042] Further, please also refer to Figures 1 to 5 , Figure 3 which is a schematic structural diagram of another embodiment of a battery sealing device of the present invention, Figure 3 mainly showing the Figure 1 and Figure 2 enlarged structure of a part of the structure shown, Figure 4 is Figure 3 the enlarged schematic structural diagram of the crankshaft and the crank connecting rod shown, Figure 5 which is a schematic side view structure diagram of yet another embodiment of a battery sealing device of the present invention.

[0043] The crank connecting rod 32 is composed of a first connecting portion 321 connecting the crankshaft 31 and a second connecting portion 322 connecting the first guide post 34. Specifically, the first connecting portion 321 and the second connecting portion 322 are respectively provided with reserved holes. The first connecting portion 321 is sleeved on the crankshaft 31, and a bearing is provided between the two. The second connecting portion 322 is connected to the first guide post 34 through a connecting shaft 33, and the second connecting portion 322 and the connecting shaft 33 are rotatably connected, and a bearing is also provided between the two to reduce the friction between the two.

[0044] The crankshaft 31 includes a crankshaft main body 311 and a first support shaft 312. The first support shaft 312 is eccentrically arranged at the axial end of the crankshaft main body 311 and is rotatably supported on the bracket 1. One end of the crank connecting rod 32 is rotatably sleeved on the crankshaft main body 311. Specifically, the crankshaft 31 includes two first support shafts 312 with the same dimensions. The two first support shafts 312 are respectively eccentrically arranged at the two axial ends of the crankshaft main body 311, and the two first support shafts 312 are coaxial. The motor 2 is connected to one of the first support shafts 312, and the other first support shaft 312 is rotatably supported on the bracket 1. After the motor 2 is powered on and rotates, it drives the first support shaft 312 and the crankshaft main body 311 to rotate. The crankshaft 31 can perform a circular motion around the first support shaft 312 under the drive of the motor 2.

[0045] Further, the connecting shaft 33 is an eccentric shaft. The battery sealing device 100 provided by the present invention further includes an adjusting mechanism 40. The adjusting mechanism 40 is connected to the connecting shaft 33 and is used to adjust the eccentric position of the connecting shaft 33, that is, to adjust the position of the connecting shaft 33 along the axis direction of the first guiding column 34, so as to adjust the initial distance between the pier-sealing upper die 35 and the pier-sealing lower die 21 within a set range.

[0046] Furthermore, the connecting shaft 33 includes a connecting shaft main body (not shown in the figure) and a second support shaft (not shown in the figure). The second support shaft is eccentrically arranged at the axial end of the connecting shaft main body, and the other end of the crank connecting rod 32 is rotatably sleeved on the connecting shaft main body. In an embodiment, when the height of the workpiece to be pier-sealed by the battery sealing device 100 changes, the initial distance between the pier-sealing upper die 35 and the pier-sealing lower die 21 can be adjusted to adapt to the height of the workpiece. Specifically, the second support shaft on the connecting shaft 33 can be rotated. Since the second support shaft is eccentrically arranged at the axial end of the connecting shaft main body, rotating the second support shaft can change the position of the second support shaft relative to the pier-sealing lower die 21. Since the connecting shaft 33 is connected to the first guiding column 34, and the pier-sealing upper die 35 is arranged at the end of the first guiding column 34 far from the connecting shaft 33, the initial distance between the pier-sealing upper die 35 and the pier-sealing lower die 21 is changed by rotating the second support shaft on the connecting shaft 33.

[0047] Still further, the connecting shaft 33 may include two second support shafts. When the connecting shaft 33 includes two second support shafts, the two support shafts have the same size and are coaxially arranged at the axial end of the connecting shaft main body.

[0048] Further, the adjusting mechanism 40 includes an eccentric adjusting plate 42 and a pointer 43. Any one of the eccentric adjusting plate 42 and the pointer 43 is fixedly connected to the connecting shaft 33, and the other is fixedly connected to the first guiding column 34.

[0049] Still further, a plurality of scales are arranged on the eccentric adjusting plate 42 at intervals around the second support shaft, and the scale pointed by the pointer 43 is used to represent the initial distance between the pier-sealing upper die 35 and the pier-sealing lower die 21.

[0050] In an embodiment, the eccentric adjusting plate 42 is fixedly connected to the connecting shaft main body of the connecting shaft 33, and the pointer 43 is fixedly connected to the first guiding column 34, so as to drive the connecting shaft 33 to rotate axially around the second support shaft when the eccentric adjusting plate 42 is rotated, thereby adjusting the position of the connecting shaft main body along the axis direction of the first guiding column 34, and the height of the first guiding column 34 is displayed by the scale of the eccentric adjusting plate 42 relative to the pointer 43. Among them, the position of the pointer 43 is always vertically downward or points to a fixed position, and the eccentric adjusting plate 42 moves relative to the pointer 43 during the rotation process.

[0051] In another embodiment, the pointer 43 is fixedly connected to the connecting shaft body in the connecting shaft 33, and the eccentric adjusting plate 42 is fixedly connected to the first guiding column 34, so as to drive the connecting shaft 33 to rotate circumferentially around the second support shaft when the pointer 43 rotates, thereby adjusting the position of the connecting shaft body in the axial direction of the first guiding column 34, and the height of the first guiding column 34 is displayed by the pointer 43 relative to the scale on the eccentric adjusting plate 42.

[0052] Please continue to refer to Figures 1 to 3 simultaneously. The adjusting mechanism 40 further includes a locking mechanism 41 for locking the connecting shaft 33 and the first guiding column 34 after the position of the connecting shaft body is adjusted by the eccentric adjusting plate 42 or the pointer 43. The locking mechanism 41 at least includes a locking nut.

[0053] Please continue to refer to Figures 1 to 3 simultaneously. The battery sealing device provided by the present invention further includes a guiding seat 3 fixedly connected to the bracket 1. The guiding seat 3 is provided with a first guiding cavity (not shown in the figure), and the first guiding column 34 is arranged in the first guiding cavity for defining the axial direction of the first guiding column 34. The first guiding column 34 can reciprocate along the axial direction of the first guiding cavity under the drive or transmission of an external force, thereby driving the pier-sealing upper die 35 connected to the first guiding column 34 to approach or move away from the pier-sealing lower die 21 to complete the pier-sealing operation.

[0054] Please refer to Figure 2 and Figure 6 and Figure 7 simultaneously. Figure 6 FIG. Figure 7 is a schematic diagram of an application scenario in an embodiment of a battery sealing device of the present invention.

[0055] Further, a first channel 4 extending along the axial direction of the first guiding column 34 is arranged in the first guiding column 34, and an avoidance groove 6 communicating with the first channel 4 is arranged on the outer peripheral surface of the first guiding column 34.

[0056] The battery sealing device 100 provided by the present invention further includes a push rod 7 and a pin shaft 8. The pin shaft 8 is arranged in the avoidance groove 6, and the push rod 7 is arranged inside the first channel 4 and the upper end is fixedly connected to the guiding seat 3 through the pin shaft 8. After the pier-sealing upper die 35 approaches the workpiece carried by the pier-sealing lower die 21 and completes the pier-sealing operation, the first guiding column 34 and the pier-sealing upper die 35 connected thereto are driven to move away from the pier-sealing lower die 21. At this time, the avoidance groove 6 on the first guiding column 34 will move synchronously with the first guiding column 34. At this time, the pin shaft 8 changes from being closer to the upper end of the avoidance groove 6 to being closer to the lower end of the avoidance groove 6, that is, the positional relationship of the pin shaft 8 relative to the avoidance groove 6 changes from the Figure 6 position relationship shown in the figure to Figure 7The positional relationship shown. Among them, the lower end of the push rod 7 is higher than the lowest position of the pier-sealing upper die 35 when the pier-sealing upper die 35 performs the pier-sealing operation on the workpiece. When the pier-sealing upper die 35 moves upward after completing the pier-sealing operation, since the position of the push rod 7 fixed by the pin shaft 8 is fixed (the position where CC' is shown in the figure is fixed), the workpiece stuck in the pier-sealing upper die 35 will contact the lower end of the push rod 7 and will be subjected to the continuous downward pressure of the push rod 7, so that it can be separated from the pier-sealing upper die 35.

[0057] In one embodiment, during Figures 6 to 7 the process shown, if the workpiece is stuck at the pier-sealing upper die 35 due to the pressure during the pier-sealing by the pier-sealing upper die 35, since the position of the push rod 7 fixed by the pin shaft 8 remains unchanged, the first guide post 34, the pier-sealing upper die 35 and the workpiece stuck at the pier-sealing upper die 35 will move away from the pier-sealing lower die 21 or be in the process of moving away from the pier-sealing lower die 21. At this time, when the first guide post 34 and the pier-sealing upper die 35 continue to move away from the pier-sealing lower die 21 under the drive of structures such as the crank connecting rod 32, the push rod 7 remains unchanged, and the workpiece stuck at the pier-sealing upper die 35 will be subjected to the pressure of the push rod 7 during the process of following the pier-sealing upper die 35, and then be separated from the pier-sealing upper die 35.

[0058] Furthermore, a second channel 5 communicating with the first channel 4 is provided in the pier-sealing upper die 35. The push rod 7 can sequentially pass through the first channel 4 and the second channel 5. The push rod 7 extends out of the second channel 5 during the process that the first guide post 34 drives the pier-sealing upper die 35 to move away from the pier-sealing lower die 21, and then applies a pushing force to the workpiece stuck on the pier-sealing upper die 35, so that the workpiece will not be damaged due to being stuck on the pier-sealing upper die 35 after the pier-sealing operation is completed.

[0059] Furthermore, please continue to refer to [[ID= and ​ , the battery sealing device 100 provided by the present invention further includes a pier-sealing lower die base 22.

[0060] Among them, the pier-sealing lower die base 22 is a column body provided with a through accommodation cavity 221. A first annular bearing platform 222 is provided on the inner wall of the accommodation cavity 221. The pier-sealing lower die 2 is inserted into the accommodation cavity 221 from one end face of the pier-sealing lower die base 22 and is supported on the first annular bearing platform 222.

[0061] Please refer to ​ , ​ which is a schematic structural diagram of another embodiment of a battery sealing device of the present invention, ​ is ​ a sectional view of the lower die assembly shown along B-B', ​ which is a schematic structural diagram of the pier-sealing lower die in a battery sealing device of the present invention, ​ is ​Schematic cross-sectional structure diagram of the pier-sealing lower die shown.

[0062] Further, the lower die assembly 20 further includes a pier-sealing lower die bottom plate 23 fixed to the bracket 1. Among them, the accommodating cavity 221 provided in the pier-sealing lower die seat 22 communicates with the pier-sealing lower die bottom plate 23 and the pier-sealing lower die 21. That is, the pier-sealing lower die 21 is a cylinder provided with an accommodating cavity 221 that penetrates the pier-sealing lower die bottom plate 23 and the pier-sealing lower die 21. An accommodating groove 231 is provided at the upper end of the pier-sealing lower die bottom plate 23, an elastic member 26 is provided in the accommodating groove 231, the pier-sealing lower die 21 is provided with a third passage 10 that communicates with the accommodating cavity 221 and the accommodating groove 231, and a second guide post 24 is provided in the third passage 10. The lower end of the second guide post 24 is connected to the elastic member 26, and the upper end protrudes from the pier-sealing lower die 21.

[0063] Specifically, in an embodiment, the pier-sealing lower die seat 22 includes a cylindrical pier-sealing lower die main body 223 and a first lower die seat 224 and a second lower die seat 225 that respectively protrude from the upper and lower end faces of the pier-sealing lower die main body 223. The first lower die seat 224 and the second lower die seat 225 are respectively provided with communicating accommodating cavities 221. Among them, the accommodating cavity 221 includes a first through hole 2211 and a second through hole 2212 that communicate. The first through hole 2211 on the first lower die seat 224 is used to fix the pier-sealing lower die 21. The second lower die seat 225 is fixed to the pier-sealing lower die bottom plate 23, and an elastic member is provided in the second through hole 2212 that communicates between the second through hole 2212 and the pier-sealing lower die bottom plate 23. In order to prevent the elastic member from detaching from the second through hole 2212, the aperture of the second through hole 2212 is different from that of the first through hole 2211. In other embodiments, the accommodating cavity 221 may further include a third through hole 2213 connecting the second through hole 2212 and the first through hole 2211, and the aperture of the third through hole 2213 is at least smaller than that of the second through hole 2212, for avoiding the elastic member from detaching from the second through hole 2212.

[0064] Among them, further, the elastic member 26 is a spring, and the diameter of the spring is smaller than the diameter of the accommodating cavity 221.

[0065] Further, the battery sealing device 100 provided by the present invention further includes a guide sleeve 25, and the lower end of the second guide post 24 is connected to the upper end face of the guide sleeve 25. In the current embodiment, by providing the guide sleeve 25 in the battery sealing device 100 provided by the present invention, the second guide post 24 can accurately output the pressure applied by the workpiece to the elastic member 26, and then the elastic force provided by the elastic member 26 cancels out the pressure applied by the workpiece.

[0066] Specifically, during the process of the first guide post 34 driving the pier sealing upper die 35 to press the workpiece, the workpiece moves downward under the pressure from the pier sealing upper die 35, and then drives the second guide post 24 in contact with the workpiece to move downward, thereby applying pressure to the guide sleeve 25 and compressing the elastic member 26 below the guide sleeve 25. The cooperation of the elastic member 26, the second guide post 24, and the guide sleeve 25 realizes the buffering of the workpiece during the pier sealing process, thereby protecting the workpiece from being damaged due to the pressure applied by the pier sealing upper die 35. The elastic member 26 and the guide sleeve 25 are also used to reset the workpiece during the process of the pier sealing upper die 35 moving away from the pier sealing lower die 21, completely disengaging from the position of the pier sealing lower die 21, so that a turntable (not shown in the figure) can rotate it to the next working station.

[0067] Furthermore, please refer to ​ again. For the operation cooperation with the turntable carrying the workpiece, a photoelectric sensor 11 is also provided. Specifically, the photoelectric sensor 11 is arranged on the bracket 1, and an induction piece 12 is arranged on the crankshaft 31. The induction piece 12 can rotate along with the rotation of the crankshaft 31, and thus sequentially pass through the photoelectric sensor 11. When the induction piece 12 passes through the photoelectric sensor 11, the photoelectric sensor 11 transmits the passing time of the induction piece 12 to the control device (such as PLC) of the motor 2. Since the rotation of the turntable is regular and known, the control device (not shown in the figure) can calculate the starting and stopping times of the crankshaft 31 according to the known signal, that is, two groups of the induction piece 12 and the photoelectric sensor 11 are respectively arranged to give the starting and stopping signals. Among them, the starting and stopping times of the crankshaft 31 can also be understood as the time when the pier sealing upper die 35 performs the pier sealing operation and the time when it returns to the highest position.

[0068] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A battery sealing device, characterized in that, Comprising: A bracket; A lower die assembly, fixedly arranged on the bracket and including a pier-sealing lower die for carrying a workpiece; An upper die assembly, including a crankshaft, a crank connecting rod, a connecting shaft, a first guide post and a pier-sealing upper die, wherein the crankshaft is rotatably arranged on the bracket, one end of the crank connecting rod is rotatably sleeved on the crankshaft, the other end of the crank connecting rod is rotatably connected to the first guide post through the connecting shaft, during the rotation of the crankshaft, the first guide post is driven by the crank connecting rod to reciprocate along the axis direction of the first guide post, the pier-sealing upper die is arranged at the other end of the first guide post and approaches or moves away from the pier-sealing lower die along with the reciprocating movement of the first guide post, and the connecting shaft is an eccentric shaft; The device further includes an adjusting mechanism, connected to the connecting shaft, for adjusting the eccentric position of the connecting shaft, and the adjusting mechanism is used to adjust the position of the connecting shaft along the axis direction of the first guide post, so as to adjust the initial distance between the pier-sealing upper die and the pier-sealing lower die.

2. The battery sealing device according to claim 1, characterized in that The adjusting mechanism includes an eccentric adjusting plate and a pointer, and any one of the eccentric adjusting plate and the pointer is fixedly connected to the connecting shaft, and the other is fixedly connected to the first guide post.

3. The battery sealing device according to claim 2, characterized in that, The adjusting mechanism further includes a locking mechanism, used for locking the connecting shaft and the first guide post after adjusting the position of the eccentric adjusting plate or the pointer relative to the main body of the connecting shaft.

4. The battery sealing device according to claim 1, characterized in that, It further includes a guide seat fixedly connected to the bracket, the guide seat is provided with a first guide cavity, and the first guide post is arranged in the first guide cavity for defining the axis direction of the first guide post.

5. The battery sealing device according to claim 4, wherein, A first channel extending along the axis direction of the first guide post is arranged in the first guide post, and an avoidance groove communicating with the first channel is arranged on the outer peripheral surface of the first guide post; The device further includes a push rod and a pin shaft, wherein the pin shaft is arranged in the avoidance groove, and the push rod is arranged inside the first channel and the upper end is fixedly connected to the guide seat through the pin shaft.

6. The battery sealing device according to claim 1, characterized in that, The lower die assembly includes a pier-sealing lower die seat; The pier-sealing lower die seat is a column body provided with a through accommodating cavity, a first annular bearing platform is arranged on the inner wall of the accommodating cavity, and the pier-sealing lower die is inserted into the accommodating cavity from one end face of the pier-sealing lower die seat and supported on the first annular bearing platform.

7. The battery sealing device according to claim 6, characterized in that, The lower die assembly further includes a pier-sealing lower die bottom plate, wherein the accommodating cavity provided by the pier-sealing lower die seat communicates with the pier-sealing lower die bottom plate and the pier-sealing lower die, a receiving groove is arranged at the upper end of the pier-sealing lower die bottom plate, an elastic member is arranged in the receiving groove, the pier-sealing lower die is provided with a third channel communicating with the accommodating cavity and the receiving groove, and a second guide post is arranged in the third channel, the lower end of the second guide post is connected to the elastic member, and the upper end protrudes from the pier-sealing lower die.

8. The battery sealing device according to claim 7, characterized in that, It further includes a guide sleeve, and the lower end of the second guide post is connected to the upper end face of the guide sleeve.

9. The battery sealing device according to claim 8, wherein, The elastic member is a spring and the diameter of the spring is smaller than the diameter of the accommodating cavity.

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