A sealing machine for button cell

Abstract

The utility model provides a button cell sealing machine, including casing, middle part mounting panel, top mounting panel, lift drive component, guide component, punch upper die and punch lower die, lift drive component includes rotation drive part, drive screw, bearing installation shell, thrust bearing, tapered roller bearing, lift platform and connecting block, the inside and outside both sides of tapered roller bearing respectively with upper screw outer end surface, bearing installation cavity inner wall contact. The advantage of this design is that: in the process of rotating, thrust bearing and tapered roller bearing bear axial load, make middle part convex ring not to move and can rotate smoothly in vertical direction, and tapered roller bearing also bears radial load, make the axis not to deviate when upper screw rotates, thereby ensure the accuracy of lift platform ascending distance, and ensure that lift platform is always in horizontal position, improve the effect of button cell sealing, improve the qualified rate.

Description

Technical Field

[0001] This utility model relates to the field of button battery manufacturing technology, and in particular to a button battery sealing machine. Background Technology

[0002] Button batteries, also known as coin cells, are mostly button-shaped with a large diameter and small thickness. Due to their numerous advantages, such as high energy density, long cycle life, good safety, no memory effect, and environmental friendliness, they are widely used in 3C digital products, electric vehicles, new energy vehicles, energy storage systems, 5G base stations, and other fields.

[0003] During the manufacturing process of button batteries, they need to be sealed in a sealing machine. A stamping mechanism is used to fold the edge of the lower casing of the battery inward and press it tightly onto the upper casing. Generally, a cylinder drives the stamping head to stamp the button battery. However, due to the small thickness of button batteries and the low driving precision of the cylinder, it is difficult to ensure that the stamping head is in a horizontal position during stamping. This results in inconsistent sealing effects at different positions on the outer ring of the button battery, and may even cause the battery to be crushed. Therefore, it is necessary to develop a button battery sealing machine to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a button battery sealing machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A button battery sealing machine includes a housing, a middle mounting plate, a top mounting plate, a lifting drive assembly, a guide assembly, an upper stamping die, and a lower stamping die. The middle mounting plate is fixed to the middle of the housing, and the top mounting plate is fixed to the top of the housing. The lifting drive assembly includes a rotary drive component, a drive screw, a bearing mounting housing, a thrust bearing, a tapered roller bearing, a lifting platform, and a connecting block. The rotary drive component is fixed below the middle mounting plate. The drive screw includes a lower protrusion, a middle protrusion, and an upper screw integrally formed from bottom to top. The lower protrusion passes through the middle mounting plate and is connected to the power output end of the rotary drive component. The bearing mounting housing is fixed above the middle mounting plate and sleeved on the drive screw. The housing contains a bearing mounting cavity. A thrust bearing is fitted onto the lower protrusion. The upper and lower sides of the thrust bearing contact the lower end face of the middle protrusion ring and the upper end face of the middle mounting plate, respectively. A tapered roller bearing is fitted onto the upper screw. The upper and lower sides of the tapered roller bearing contact the top of the bearing mounting cavity and the upper end face of the middle protrusion ring, respectively. The inner and outer sides of the tapered roller bearing contact the outer end face of the upper screw and the inner wall of the bearing mounting cavity, respectively. A connecting block is fixed below the lifting platform. The upper screw is threadedly connected to the connecting block. A guide assembly is fixed on the middle mounting plate. The lifting platform is slidably connected to the guide assembly and can slide vertically along the guide assembly. The upper stamping die and the lower stamping die are fixed on the top mounting plate and the lifting platform, respectively, and are arranged opposite to each other.

[0007] Further description of the present invention: The rotary drive component includes a connecting column, a rotary motor, a washer, and a connecting block. The connecting column is fixed below the middle mounting plate, the rotary motor is fixed on the connecting column, the rotary motor has a rotating shaft in the middle, the rotating shaft is inserted into the lower end of the connecting block and does not rotate relative to the connecting block, the lower protruding column is inserted into the upper end of the connecting block and does not rotate relative to the connecting block, and the washer is sleeved on the rotating shaft of the rotary motor and corresponds to the lower part of the connecting block.

[0008] Further description of this utility model: The lower end of the lifting platform is provided with a clearance hole, and the upper screw corresponds to the clearance hole.

[0009] Further description of the present invention: The guide assembly includes a guide post, a guide sleeve, and a limiting sleeve. The upper and lower ends of the guide post are fixed to the top mounting plate and the middle mounting plate, respectively. The guide sleeve is fixed to the lifting platform and slidably connected to the guide post. The limiting sleeve is sleeved outside the guide post. The lower end of the limiting sleeve is fixed to the middle mounting plate, and the upper end of the limiting sleeve is in contact with the lifting platform. Two sets of each of the guide post, guide sleeve, and limiting sleeve are provided and correspond to the left and right sides of the lower stamping die, respectively.

[0010] Further description of this utility model: The stamping die includes a mounting base, a central support column, a limiting ring, and an adjusting end cap. The lower ends of the mounting base and the central support column are both fixed above the lifting platform. The lower end of the adjusting end cap is threadedly connected to the outer wall of the mounting base. There is a clearance groove between the upper inner wall of the mounting base and the upper outer wall of the central support column. The limiting ring is sleeved on the upper end of the central support column and its outer circumference is fixed on the adjusting end cap. The upper end of the limiting ring is higher than the upper surface of the central support column, and the lower end of the limiting ring corresponds to the clearance groove.

[0011] The beneficial effects of this invention are as follows: When sealing button batteries, the button battery is placed in the lower stamping die and the equipment is started. The rotating drive component rotates, causing the drive screw to rotate. The drive screw then drives the connecting block to rise, which in turn drives the lifting platform to rise vertically on the guide assembly. This drives the lower stamping die to move upwards towards the upper stamping die. Finally, the upper stamping die folds the upper edge of the battery's lower casing inwards and presses it firmly onto the battery's upper cover, thus completing the sealing. The advantage of this design is that during the rotation of the drive screw by the rotating drive component, the part of the drive screw inside the bearing mounting housing cooperates with the thrust bearing and the tapered roller bearing to achieve rotation. During rotation, the thrust bearing and the tapered roller bearing bear axial loads, ensuring that the central convex ring does not move vertically and can rotate smoothly. At the same time, the tapered roller bearing also bears radial loads, ensuring that the axis does not shift when the upper screw rotates. This ensures the accuracy of the lifting platform's rising distance and guarantees that the lifting platform is always in a horizontal position, improving the sealing effect of the button batteries and increasing the pass rate. Attached Figure Description

[0012] Figure 1 This is an overall structural diagram of the present invention;

[0013] Figure 2 This is a cross-sectional view of the present invention;

[0014] Explanation of reference numerals in the attached figures:

[0015] 1. Housing; 2. Middle mounting plate; 3. Top mounting plate; 4. Lifting drive assembly; 41. Rotary drive component; 411. Connecting column; 412. Rotary motor; 413. Washer; 414. Coupling block; 42. Drive screw; 421. Lower convex column; 422. Middle convex ring; 423. Upper screw; 43. Bearing mounting housing; 44. Thrust bearing; 45. Tapered roller bearing; 46. Lifting platform; 461. Clearing hole; 47. Connecting block; 5. Guide assembly; 51. Guide column; 52. Guide sleeve; 53. Limiting sleeve; 6. Upper stamping die; 7. Lower stamping die; 71. Mounting base; 72. Middle support column; 73. Limiting ring; 74. Adjusting end cover. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] like Figures 1 to 2 As shown, a button battery sealing machine includes a housing 1, a middle mounting plate 2, a top mounting plate 3, a lifting drive assembly 4, a guide assembly 5, an upper stamping die 6, and a lower stamping die 7. The middle mounting plate 2 is fixed to the middle of the housing 1, and the top mounting plate 3 is fixed to the top of the housing 1. The lifting drive assembly 4 includes a rotary drive component 41, a drive screw 42, a bearing mounting shell 43, a thrust bearing 44, a tapered roller bearing 45, a lifting platform 46, and a connecting block 47. The rotary drive component 41 is fixed below the middle mounting plate 2. The drive screw 42 includes a lower protrusion 421, a middle protrusion 422, and an upper screw 423 integrally formed from bottom to top. The lower protrusion 421 passes through the middle mounting plate 2 and is connected to the power output end of the rotary drive component 41. The bearing mounting shell 43 is fixed above the middle mounting plate 2 and sleeved on the drive screw 42. The bearing housing 43 has a bearing mounting cavity. The thrust bearing 44 is sleeved on the lower protrusion 421. The upper and lower sides of the thrust bearing 44 are in contact with the lower end face of the middle protrusion ring 422 and the upper end face of the middle mounting plate 2, respectively. The tapered roller bearing 45 is sleeved on the upper screw 423. The upper and lower sides of the tapered roller bearing 45 are in contact with the top of the bearing mounting cavity and the upper end face of the middle protrusion ring 422, respectively. The inner and outer sides of the tapered roller bearing 45 are in contact with the outer end face of the upper screw 423 and the inner wall of the bearing mounting cavity, respectively. The connecting block 47 is fixed below the lifting platform 46. The upper screw 423 is threadedly connected to the connecting block 47. The guide assembly 5 is fixed on the middle mounting plate 2. The lifting platform 46 is slidably connected to the guide assembly 5 and can slide vertically along the guide assembly 5. The stamping upper die 6 and the stamping lower die 7 are fixed on the top mounting plate 3 and the lifting platform 46, respectively, and are arranged opposite to each other.

[0018] When sealing the button cell, the button cell is placed in the lower stamping die 7 and the equipment is started. The rotation drive component 41 rotates, thereby rotating the drive screw 42. The drive screw 42 drives the connecting block 47 to rise, which in turn drives the lifting platform 46 to rise vertically on the guide component 5. This drives the lower stamping die 7 to move upward and approach the upper stamping die 6. Finally, the upper stamping die 6 folds the upper edge of the lower battery shell inward and presses it onto the upper battery cover, thus completing the sealing. The advantage of this design is that, during the rotation of the drive screw 42 driven by the rotary drive component 41, the portion of the drive screw 42 inside the bearing mounting housing 43 cooperates with the thrust bearing 44 and the tapered roller bearing 45 to achieve rotation. During rotation, the thrust bearing 44 and the tapered roller bearing 45 bear axial loads, ensuring that the central convex ring 422 does not move in the vertical direction and can rotate smoothly. At the same time, the tapered roller bearing 45 also bears radial loads, ensuring that the axis does not shift when the upper screw 423 rotates. This ensures the accuracy of the lifting distance of the lifting platform 46 and guarantees that the lifting platform 46 is always in a horizontal position, improving the sealing effect of the button battery and increasing the pass rate.

[0019] The rotary drive component 41 includes a connecting column 411, a rotary motor 412, a washer 413, and a connecting block 414. The connecting column 411 is fixed below the middle mounting plate 2. The rotary motor 412 is fixed on the connecting column 411. The rotary motor 412 has a rotating shaft in the middle. The rotating shaft is inserted into the lower end of the connecting block 414 and does not rotate relative to the connecting block 414. The lower protruding column 421 is inserted into the upper end of the connecting block 414 and does not rotate relative to the connecting block 414. The washer 413 is sleeved on the rotating shaft of the rotary motor 412 and corresponds to the lower part of the connecting block 414.

[0020] The rotating shaft of the rotary motor 412 is connected to the lower protrusion 421 through the coupling block 414 to achieve synchronous rotation. The washer 413 is used to support the coupling block 414 and prevent the lower end of the coupling block 414 from wearing the body of the rotary motor 412.

[0021] The lower end of the lifting platform 46 is provided with a clearance hole 461, and the upper screw 423 corresponds to the clearance hole 461, which can increase the vertical movement stroke of the lifting platform 46 without increasing the height of the equipment.

[0022] The guide assembly 5 includes a guide post 51, a guide sleeve 52, and a limiting sleeve 53. The upper and lower ends of the guide post 51 are fixed to the top mounting plate 3 and the middle mounting plate 2, respectively. The guide sleeve 52 is fixed to the lifting platform 46 and slidably connected to the guide post 51. The limiting sleeve 53 is sleeved on the outside of the guide post 51. The lower end of the limiting sleeve 53 is fixed to the middle mounting plate 2, and the upper end of the limiting sleeve 53 is in contact with the lifting platform 46. Two sets of each of the guide post 51, guide sleeve 52, and limiting sleeve 53 are provided and correspond to the left and right sides of the stamping die 7, respectively.

[0023] The lifting platform 46 slides vertically on the guide column 51 via the guide sleeve 52, and the limiting sleeve 53 restricts the lowest position of the lifting platform 46 from descending.

[0024] The stamping die 7 includes a mounting base 71, a central support column 72, a limiting ring 73, and an adjusting end cap 74. The lower ends of the mounting base 71 and the central support column 72 are both fixed above the lifting platform 46. The lower end of the adjusting end cap 74 is threaded to the outer wall of the mounting base 71. There is a clearance groove between the upper inner wall of the mounting base 71 and the upper outer wall of the central support column 72. The limiting ring 73 is sleeved on the upper end of the central support column 72 and its outer periphery is fixed on the adjusting end cap 74. The upper end of the limiting ring 73 is higher than the upper end surface of the central support column 72, and the lower end of the limiting ring 73 corresponds to the clearance groove.

[0025] The upper end of the limiting ring 73 is higher than the upper end face of the middle support column 72, so that the middle part of the limiting ring 73 forms a cavity for placing the button battery. The button battery is placed on the upper end face of the support column. By rotating the adjusting end cap 74, the limiting ring 73 can be driven to rise or fall synchronously to accommodate button batteries of different thicknesses for sealing.

[0026] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A button battery sealing machine, characterized in that: The assembly includes a housing, a middle mounting plate, a top mounting plate, a lifting drive assembly, a guide assembly, an upper stamping die, and a lower stamping die. The middle mounting plate is fixed to the middle of the housing, and the top mounting plate is fixed to the top of the housing. The lifting drive assembly includes a rotary drive component, a drive screw, a bearing mounting housing, a thrust bearing, a tapered roller bearing, a lifting platform, and a connecting block. The rotary drive component is fixed below the middle mounting plate. The drive screw includes a lower protrusion, a middle protrusion, and an upper screw integrally formed from bottom to top. The lower protrusion passes through the middle mounting plate and is connected to the power output end of the rotary drive component. The bearing mounting housing is fixed above the middle mounting plate and sleeved on the drive screw. The bearing mounting housing has a bearing mounting cavity inside. The thrust shaft... The thrust bearing is sleeved on the lower protruding post. The upper and lower sides of the thrust bearing are in contact with the lower end face of the middle protruding ring and the upper end face of the middle mounting plate, respectively. The tapered roller bearing is sleeved on the upper screw. The upper and lower sides of the tapered roller bearing are in contact with the top of the bearing mounting cavity and the upper end face of the middle protruding ring, respectively. The inner and outer sides of the tapered roller bearing are in contact with the outer end face of the upper screw and the inner wall of the bearing mounting cavity, respectively. The connecting block is fixed below the lifting platform. The upper screw is threadedly connected to the connecting block. The guide assembly is fixed on the middle mounting plate. The lifting platform is slidably connected to the guide assembly and can slide vertically along the guide assembly. The upper stamping die and the lower stamping die are fixed on the top mounting plate and the lifting platform, respectively, and are arranged opposite to each other.

2. The button battery sealing machine according to claim 1, characterized in that: The rotary drive component includes a connecting column, a rotary motor, a washer, and a coupling block. The connecting column is fixed below the central mounting plate, the rotary motor is fixed on the connecting column, the rotary motor has a rotating shaft in the middle, the rotating shaft is inserted into the lower end of the coupling block and does not rotate relative to the coupling block, the lower protruding column is inserted into the upper end of the coupling block and does not rotate relative to the coupling block, and the washer is sleeved on the rotating shaft of the rotary motor and corresponds to the lower part of the coupling block.

3. The button battery sealing machine according to claim 1, characterized in that: The lower end of the lifting platform is provided with a clearance hole, and the upper screw corresponds to the clearance hole.

4. A button battery sealing machine according to claim 1, characterized in that: The guiding assembly includes a guide post, a guide sleeve, and a limiting sleeve. The upper and lower ends of the guide post are fixed to the top mounting plate and the middle mounting plate, respectively. The guide sleeve is fixed to the lifting platform and slidably connected to the guide post. The limiting sleeve is sleeved outside the guide post. The lower end of the limiting sleeve is fixed to the middle mounting plate, and the upper end of the limiting sleeve is in contact with the lifting platform. Two sets of each of the guide post, guide sleeve, and limiting sleeve are provided and correspond to the left and right sides of the lower stamping die, respectively.

5. A button battery sealing machine according to claim 1, characterized in that: The stamping die includes a mounting base, a central support column, a limiting ring, and an adjusting end cap. The lower ends of the mounting base and the central support column are both fixed above the lifting platform. The lower end of the adjusting end cap is threaded to the outer wall of the mounting base. A clearance groove is provided between the inner wall of the upper end of the mounting base and the outer wall of the upper end of the central support column. The limiting ring is sleeved on the upper end of the central support column and its outer circumference is fixed to the adjusting end cap. The upper end of the limiting ring is higher than the upper surface of the central support column, and the lower end of the limiting ring corresponds to the clearance groove.

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