Stamping die for continuously producing battery shells

Abstract

The utility model is applicable to the technical field of battery case processing, and provides a stamping die for continuously producing battery cases, which comprises a die body, a stamping die core, a stamping die core, a pressing plate, a pressing plate, a pressing plate, a pressing plate, a pressing plate, a pressing plate, a pressing plate, a pressing plate and a pressing plate, and is characterized in that: the die body is provided with an upper die plate and a lower die plate symmetrically arranged along the longitudinal direction; a stamping male die is arranged on the top wall of the lower die plate, a stamping female die corresponding to the stamping male die is arranged on the top wall of the lower die plate, the supporting base is supported on the bottom wall of the lower die plate, moving rolling wheels are rotationally arranged in the supporting base, and the lifting assembly is arranged on the supporting base and movably connected with the moving rolling wheels. By rotating the rotating shaft, the lifting plate is driven by the threaded section to move upwards, the lifting plate drives the two connecting rods connected with the lifting plate to synchronously move upwards along the sliding grooves, the connecting rods pull the moving rollers to move upwards, and after the bottom ends of the moving rollers are higher than the bottom walls of the supporting legs, stable fixing of the device can be achieved through the supporting legs.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery shell processing, and particularly relates to a stamping die for continuously producing battery shells. Background Art

[0002] The lithium battery shell is the shell on the outer surface of the lithium battery. When producing the battery shell, it is necessary to perform stamping operations on the battery shell through a stamping die to complete the production of the battery shell, so as to facilitate the subsequent production of lithium-ion batteries.

[0003] Chinese utility model patent with the publication number of CN207914424U, a stamping die for continuously producing battery shells, at least two groups of the stamping punches are arranged at the bottom of the upper die, a cutting knife is installed in the middle of the stamping punches, a guide post is arranged on the outer side of the upper die, at least two groups of stamping dies are arranged on the lower die, the positions correspond to those of the stamping punches, a cutting knife groove is arranged in the middle of the stamping die, its position corresponds to that of the cutting knife, a guide hole is arranged on the outer side of the lower die, its position corresponds to that of the guide post, the lower die is installed on the base, and moving wheels are arranged under the base. The utility model greatly improves the stamping forming efficiency of the shell, thereby improving the production efficiency of the battery. The arranged cutting knife can directly put large pieces of materials for stamping forming, and then cut the stamped shell into shells meeting certain specification requirements, reducing the production process, and further improving the production efficiency. The guide post can ensure the stamping success rate, and the moving wheels are convenient for the handling of the die.

[0004] However, the above device has the following technical problems in actual use:

[0005] First, the above device places the material in the stamping groove opened on the lower die, and uses the downward pressure of the upper die to drive the stamping punch to realize the stamping forming of the material. However, when the upper and lower dies of the above device are closed, large vibrations will occur. There is a lack of a buffer and shock absorption device for the vibration when the upper die presses down inside the die. Therefore, after long-term use, the above device will be damaged or cracked due to large vibrations, affecting the subsequent normal use of the above device.

[0006] Second, the above device is provided with a plurality of moving wheels at the bottom of the die to facilitate its movement. However, when assembling the die, the above moving wheels cannot be limited (or cannot be retracted into the die), resulting in the displacement of the die itself due to the influence of the moving wheels, affecting the accuracy during actual assembly. Summary of the Utility Model

[0007] The present utility model provides a stamping die for continuously producing battery casings, aiming to solve the problems mentioned in the above background technology. In the above device, there is a lack of a buffer and shock absorption device, so the vibration generated by the downward pressing of the upper die cannot be offset. As a result, after long-term use, the upper and lower dies may be damaged or cracked, affecting the subsequent use of the above device. At the same time, in the above device, since the moving wheels cannot be retracted (or limited and fixed) after the die moves to the designated position, when the above device moves to the designated position, the die may be misaligned or offset due to the influence of the moving wheels, affecting the actual assembly.

[0008] The present utility model is implemented as follows. A stamping die for continuously producing battery casings includes: a die body having a upper template and a lower template symmetrically arranged longitudinally. A stamping punch is fixedly installed on the bottom wall of the upper template, and a stamping die cavity corresponding to the stamping punch is arranged on the top wall of the lower template. A support base supports the bottom wall of the lower template, and moving rollers are rotatably arranged in the support base. The moving rollers are used to drive the die body to move to a designated position. A lifting assembly is arranged on the support base and is movably connected to the moving rollers. The lifting assembly is used to retract the moving rollers into the support base after the die body moves to the designated position. In addition, a plurality of buffer supports are arranged outside the stamping die cavity, and both ends of each buffer support are respectively connected to the upper template and the lower template. In this solution, in the present device, a plurality of support bases are arranged in an array at the bottom of the lower template. Moving rollers are rotatably arranged in each support base. The moving rollers can drive the present device to move to a designated position (direction). After the present device moves to the designated position, by rotating the rotating shaft, the threaded section is used to drive the lifting plate to move upward. The lifting plate drives the two connecting rods connected thereto to move upward along the sliding grooves synchronously. The connecting rods pull the moving rollers upward. After the bottom end of the moving roller is higher than the bottom wall of the support leg, the stability of the present device can be achieved by using the support leg.

[0009] In addition, when the present device is stamping, the upper template moves downward and approaches the lower template. At this time, the guide post will gradually contract into the movable cavity. At the same time, the bottom end of the guide post will contact the abutting block and push the abutting block downward. The abutting block presses downward and compresses the first buffer spring. The first buffer spring absorbs part of the impact to achieve shock absorption. At the same time, when the guide post moves to a certain position, the bottom wall of the convex edge will contact the top wall of the movable sleeve and press the movable sleeve downward. The movable sleeve moves downward and compresses the second buffer spring. The second buffer spring absorbs part of the impact to achieve shock absorption. The mutual cooperation of the first buffer spring and the second buffer spring can absorb the impact of the downward movement of the upper template to the greatest extent and reduce the vibration damage to the die body during the stamping process.

[0010] Preferably, a plurality of the supporting bases are provided and are arranged in an array on the bottom wall of the lower template. Each of the supporting bases has: two legs that are oppositely arranged and vertically fixed to the bottom wall of the lower template. Sliding grooves are symmetrically formed on the side walls of the two legs along their heights. A connecting rod passes through the two sliding grooves, and a gap is reserved between the two legs. A moving roller is rotatably connected to the outer wall of the corresponding connecting rod within the gap. The lifting assembly includes: a rotating shaft that is vertically and rotatably connected to the bottom wall of the lower template between two supporting bases on the same side. A threaded section is provided on the outer wall of the rotating shaft, and a lifting plate is screwed onto the threaded section. The two ends of the lifting plate are fixedly connected to the corresponding end parts of the two connecting rods on both sides. In this solution, when the device moves to a designated position, by rotating the rotating shaft, the lifting plate is driven to move vertically upward by the threaded section on the outer wall of the rotating shaft. The two ends of the lifting plate are respectively fixedly connected to the corresponding end parts of the two connecting rods on both sides. Therefore, when the lifting plate moves upward, it will drive the two connecting rods on both sides to move upward synchronously along the sliding grooves. The connecting rod pulls the moving roller rotatably arranged on its outer side to move upward. When the bottom wall of the moving roller is higher than the bottom wall of the leg, the bottom wall of the leg contacts the surface of the bearing object (the bottom wall of the moving roller disengages from the surface of the bearing object), and the leg is used to support the device, while avoiding the device being misaligned or shifted due to the rolling of the moving roller on the bearing object.

[0011] Preferably, a gripping portion is formed on the outer wall of the rotating shaft above the threaded section, and an anti-slip sleeve is sleeved on the outer side of the gripping portion. In this solution, the provision of the gripping portion can facilitate the staff to hold and rotate the rotating shaft to drive its rotation. At the same time, the provision of the anti-slip sleeve can increase the friction between the rotating shaft and the staff's hand, avoiding problems such as slipping.

[0012] Preferably, the buffer support includes: a guide post fixedly installed on the bottom wall of the upper template, and a sleeve is fixedly installed on the top wall of the lower template. An activity cavity is formed on the top wall of the sleeve, and the bottom end portion of the guide post extends into the activity cavity. Among them, a resisting block is slidably connected in the activity cavity, and a first buffer spring is arranged between the bottom wall of the resisting block and the inner bottom wall of the activity cavity. In this solution, when the device performs stamping work, the upper template is driven by an external driving device to move downward and approach the lower template. The guide post gradually moves downward and gradually contracts into the activity cavity. After the bottom wall of the guide post contacts the top wall of the resisting block, as the guide post continues to move downward, the guide post will press the resisting block to move downward and compress the first buffer spring. When the first buffer spring contracts, it will absorb part of the impact when the upper template moves downward, achieving a shock-absorbing effect.

[0013] Preferably, the buffer support further includes: a convex edge is formed on the outer wall of the end of the guide post away from the sleeve, the outer diameter of the convex edge is greater than the outer diameter of the guide post, a movable sleeve is further sleeved outside the sleeve, and a second buffer spring is further sleeved outside the sleeve at the bottom end of the movable sleeve, and the top end of the second buffer spring abuts against the bottom end of the movable sleeve; in this solution, in addition, when the guide post moves down to a certain position, the bottom wall of the convex edge will contact the top wall of the movable sleeve. As the guide post continues to move down, the convex edge presses the movable sleeve to move down and squeezes the second buffer spring. When the second buffer spring contracts, it will absorb part of the impact when the upper template moves down, achieving the damping effect.

[0014] Preferably, a plurality of guide grooves are equiangularly distributed on the outer wall of the sleeve, each guide groove is opened along the height of the sleeve, and guide blocks are arranged on the inner wall of the movable sleeve corresponding to the plurality of guide grooves, and the guide blocks are slidably connected in the guide grooves; in this solution, by setting the guide blocks and the guide grooves, it can be ensured that the movable sleeve will not shake laterally when performing lifting and lowering displacement, thus ensuring the smoothness of the movable sleeve during lifting and lowering displacement. In addition, the moving position of the movable sleeve can be limited to prevent it from detaching from the sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are: A stamping die for continuously producing battery casings of the present invention:

[0016] 1. In the present device, a plurality of support bases are arranged in an array at the bottom of the lower template, and moving rollers are rotatably arranged in each support base. The moving rollers can drive the present device to move to a specified position (direction). When the present device moves to the specified position, by rotating the rotating shaft, the threaded section is used to drive the lifting plate to move up. The lifting plate drives the two connecting rods connected thereto to move up synchronously along the sliding grooves. The connecting rods pull the moving rollers up. After the bottom end of the moving roller is higher than the bottom wall of the leg, the present device can be stably fixed by using the leg.

[0017] 2. When the present device is stamping, the upper template moves down and approaches the lower template. At this time, the guide post will gradually contract into the movable cavity, and at the same time, the bottom end of the guide post will abut against the abutting block and push the abutting block down. The abutting block presses down and compresses the first buffer spring. The first buffer spring absorbs part of the impact to achieve damping. At the same time, when the guide post moves to a certain position, the bottom wall of the convex edge will contact the top wall of the movable sleeve and press the movable sleeve down at the same time. The movable sleeve moves down to compress the second buffer spring. The second buffer spring absorbs part of the impact to achieve damping. The mutual cooperation of the first buffer spring and the second buffer spring can absorb the impact of the upper template moving down to the greatest extent and reduce the vibration damage to the die body during the stamping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view of the present invention;

[0019] Figure 2 Side view of the lifting component in the present utility model;

[0020] Figure 3 Cross-sectional view of the buffer support in the present utility model;

[0021] Figure 4 In the present utility model Figure 3 Enlarged view of the structure at position A;

[0022] In the figure:

[0023] 1. Mold body; 11. Upper template; 111. Stamping punch; 12. Lower template; 121. Stamping die; 13. Support base; 131. Legs; 132. Sliding groove; 133. Connecting rod;

[0024] 2. Moving roller;

[0025] 3. Lifting component; 31. Rotating shaft; 32. Threaded section; 33. Lifting plate; 34. Anti-slip sleeve;

[0026] 4. Buffer support; 41. Guide post; 42. Sleeve; 421. Activity cavity; 43. Block; 44. First buffer spring; 45. Flange; 46. Movable sleeve; 461. Guide groove; 462. Guide block; 47. Second buffer spring. Detailed implementation manners

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model.

[0028] Generally, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model.

[0029] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] Please refer to Figures 1-4 , the present utility model provides a technical solution: a stamping die for continuously producing battery casings, including: a die body 1, which has: an upper template 11 and a lower template 12 symmetrically arranged along the longitudinal direction. A stamping punch 111 is fixedly installed on the bottom wall of the upper template 11, and a stamping die 121 corresponding to the stamping punch 111 is arranged on the top wall of the lower template 12. A support base 13 supports the bottom wall of the lower template 12, and a moving roller 2 is rotatably arranged inside the support base 13. The die body 1 is driven to move to a specified position by the moving roller 2. A lifting assembly 3 is arranged on the support base 13 and is movably connected to the moving roller 2. The moving roller 2 is retracted into the support base 13 by the lifting assembly 3 after the die body 1 moves to the specified position. And a plurality of buffer supports 4 are arranged outside the stamping die 121, and both ends of each buffer support 4 are respectively connected to the upper template 11 and the lower template 12.

[0033] Specifically, in order to further improve the shock absorption effect of the die body 1 during stamping, a plurality of extension blocks can be fixedly installed at equal intervals on the bottom wall of the stamping punch 111. The bottom ends of the plurality of extension blocks extend towards the stamping die 121 below them, and through holes corresponding to the plurality of extension blocks are also opened on the surface of the stamping die 121. A lifting block is slidably arranged in each through hole. A third buffer spring is also arranged on the bottom wall of the lifting block. The top end of the third buffer spring abuts against the bottom wall of the lifting block, and the bottom end abuts against the inner bottom wall of the through hole;

[0034] Among them, when the stamping punch 111 moves downward, it will drive the extension block to move downward synchronously, and the bottom end of the extension block will be gradually inserted into the corresponding through hole. After the bottom wall of the extension block contacts the lifting block, as the extension block continues to move downward, the lifting block presses down the third buffer spring, and the third buffer spring is used to absorb the vibration generated when the mold body 1 is working.

[0035] It can be understood that in order to prevent the third buffer spring from pushing the lifting block out of the through hole when rebounding, a plurality of guide grooves can be vertically opened at equal angles on the inner wall of the through hole, and a guide block is integrally formed on the side wall of the lifting block corresponding to the plurality of guide grooves. The guide block slides in the guide groove. When the lifting block moves upward, the guide block is blocked by the guide groove and controls the lifting block to move to the specified position, thereby limiting and fixing it.

[0036] Furthermore, a plurality of support bases 13 are provided and distributed in an array on the bottom wall of the lower template 12, and each support base 13 has: two supporting legs 131 which are oppositely arranged and vertically fixed to the bottom wall of the lower template 12, sliding grooves 132 are symmetrically opened on the side walls of the two supporting legs 131 along their heights, a connecting rod 133 which passes through the two sliding grooves 132, and a gap is reserved between the two supporting legs 131, and a movable roller 2 is rotatably connected to the outer wall of the corresponding connecting rod 133 in the gap, and the lifting component 3 includes: a rotating shaft 31 which is vertically connected to the bottom wall of the lower template 12 between the two support bases 13 on the same side, a threaded section 32 is provided on the outer wall of the rotating shaft 31, a lifting plate 33 is screwed on the threaded section 32, and both ends of the lifting plate 33 are fixed to the corresponding ends of the connecting rods 133 on both sides.

[0037] Furthermore, a gripping portion is formed on the outer wall of the rotating shaft 31 above the threaded section 32 , and an anti-slip sleeve 34 is provided on the outer side of the gripping portion.

[0038] Specifically, in order to better enhance the friction between the staff's hand and the gripping part, an anti-slip pattern is further provided on the outer wall of the anti-slip sleeve 34 , and the anti-slip pattern can be a plurality of granular protrusions distributed around the outer wall of the anti-slip sleeve 34 .

[0039] Furthermore, the buffer support 4 includes: a guide column 41 fixedly mounted on the bottom wall of the upper template 11, and a sleeve 42 fixedly mounted on the top wall of the lower template 12, an active cavity 421 is opened on the top wall of the sleeve 42, and the bottom end portion of the guide column 41 extends into the active cavity 421, wherein a stop block 43 is slidably connected in the active cavity 421, and a first buffer spring 44 is arranged between the bottom wall of the stop block 43 and the bottom wall of the active cavity 421.

[0040] Specifically, to prevent the first buffer spring 44 from pushing the abutting block 43 out of the movable cavity 421 when rebounding, a plurality of limiting grooves can be vertically formed at equal angles on the inner wall of the movable cavity 421, and limiting blocks are integrally formed on the side wall of the abutting block 43 corresponding to the plurality of limiting grooves. The limiting blocks slide in the limiting grooves. When the abutting block 43 moves upward, the limiting blocks are blocked by the limiting grooves to control the abutting block 43 to move to a specified position, realizing its limiting and fixing.

[0041] Further, the buffer support 4 further includes: a convex edge 45 is formed on the outer wall of the end of the guide post 41 away from the sleeve 42, the outer diameter of the convex edge 45 is greater than the outer diameter of the guide post 41, a movable sleeve 46 is further sleeved outside the sleeve 42, and a second buffer spring 47 is further sleeved outside the sleeve 42 at the bottom end of the movable sleeve 46, and the top end of the second buffer spring 47 abuts against the bottom end of the movable sleeve 46.

[0042] Specifically, in actual operation, as Figure 3 shown, the top end position of the movable sleeve 46 is higher than the top end position of the sleeve 42, and the distance between the two is preferably set as: when the bottom end of the guide post 41 contacts the top wall of the abutting block 43, the bottom end of the convex edge 45 just contacts the top end of the movable sleeve 46 at this time, so as to realize the synchronous operation of the first buffer spring 44 and the second buffer spring 47.

[0043] Further, a plurality of guide grooves 461 are distributed at equal angles on the outer wall of the sleeve 42, each guide groove 461 is opened along the height of the sleeve 42, and guide blocks 462 are arranged on the inner wall of the movable sleeve 46 corresponding to the plurality of guide grooves 461, and the guide blocks 462 are slidably connected in the guide grooves 461.

[0044] The working principle and usage process of the present utility model:

[0045] After the device moves to the specified position, the staff holds the anti-slip sleeve 34 to control the rotation of the rotating shaft 31. The lifting plate 33 screwed to the threaded section 32 on the rotating shaft 31 moves upward, and pulls the two side connecting rods 133 to move upward synchronously along the sliding grooves 132. The connecting rods 133 control the moving rollers 2 to move upward. After the bottom end of the moving rollers 2 moves above the bottom wall of the support legs 131, the support legs 131 support on the bearing plane to realize the support of the device.

[0046] When the device is performing stamping work, the upper template 11 controls the stamping punch 111 to move downward and approach the stamping die 121. The guide post 41 moves into the movable cavity 421 and presses down the abutting block 43. The abutting block 43 compresses the first buffer spring 44. At the same time, the convex edge 45 moves downward with the guide post 41 and presses down the movable sleeve 46. The movable sleeve 46 squeezes the second buffer spring 47. The buffer and shock absorption during the stamping work of the device are realized through the first buffer spring 44 and the second buffer spring 47.

[0047] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A stamping die for continuously producing battery casings, characterized in that: Comprising: A die body (1), which has: An upper template (11) and a lower template (12) symmetrically arranged longitudinally. A stamping punch (111) is fixedly installed on the bottom wall of the upper template (11), and a stamping die (121) is arranged corresponding to the stamping punch (111) on the top wall of the lower template (12); A support base (13), which is supported on the bottom wall of the lower template (12), and a moving roller (2) is rotatably arranged in the support base (13). The die body (1) is driven to move to a specified position by the moving roller (2); A lifting assembly (3), which is arranged on the support base (13) and is movably connected to the moving roller (2). After the die body (1) moves to the specified position, the moving roller (2) is retracted into the support base (13) by the lifting assembly (3); And a plurality of buffer supports (4), which are distributed outside the stamping die (121). Both ends of each buffer support (4) are respectively connected to the upper template (11) and the lower template (12).

2. The stamping die for continuously producing battery casings according to claim 1, wherein: A plurality of the support bases (13) are provided and are arranged in an array on the bottom wall of the lower template (12). Each support base (13) has: Two legs (131) oppositely arranged and vertically fixed on the bottom wall of the lower template (12). Sliding grooves (132) are symmetrically formed on the side walls of the two legs (131) along their heights; A connecting rod (133) penetrates through the two sliding grooves (132), and a gap is reserved between the two legs (131). The moving roller (2) is rotatably connected to the outer wall of the corresponding connecting rod (133) in the gap; The lifting assembly (3) includes: A rotating shaft (31) is vertically and rotatably connected to the bottom wall of the lower template (12) between two support bases (13) on the same side. A threaded section (32) is arranged on the outer wall of the rotating shaft (31); A lifting plate (33) is screwed on the threaded section (32), and both ends of the lifting plate (33) are fixedly connected to the corresponding end parts of the two connecting rods (133) on both sides.

3. The stamping die for continuously producing battery casings according to claim 2, characterized in that: A holding part is formed on the outer wall of the rotating shaft (31) above the threaded section (32), and an anti-slip sleeve (34) is sleeved on the outside of the holding part.

4. A stamping die for continuously producing battery casings according to claim 1, characterized in that: The buffer support (4) includes: A guide post (41) fixedly installed on the bottom wall of the upper template (11), and a sleeve (42) is fixedly installed on the top wall of the lower template (12). An activity cavity (421) is formed on the top wall of the sleeve (42), and the bottom end part of the guide post (41) extends into the activity cavity (421); Wherein, a resisting block (43) is slidably connected in the activity cavity (421), and a first buffer spring (44) is arranged between the bottom wall of the resisting block (43) and the inner bottom wall of the activity cavity (421).

5. The stamping die for continuously producing battery cases according to claim 4, characterized in that: The buffer support (4) further includes: A convex edge (45) is formed on the outer wall of one end of the guide post (41) away from the sleeve (42), and the outer diameter of the convex edge (45) is larger than the outer diameter of the guide post (41); An outer sleeve (46) is further sleeved on the outer side of the sleeve (42), and a second buffer spring (47) is further sleeved on the outer side of the sleeve (42) at the bottom end of the movable sleeve (46). The top end of the second buffer spring (47) abuts against the bottom end of the movable sleeve (46).

6. The stamping die for continuously producing battery casings according to claim 5, wherein: A plurality of guiding grooves (461) are equiangularly distributed on the outer wall of the sleeve (42). Each guiding groove (461) is opened along the height of the sleeve (42), and guiding blocks (462) are arranged on the inner wall of the movable sleeve (46) corresponding to the plurality of guiding grooves (461). The guiding blocks (462) are slidably connected to the guiding grooves (461).

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