Stamping male die and pit punching device with same

Abstract

The utility model provides a stamping male die and a pit punching device with the stamping male die, the stamping male die comprises a first-stage male die, a second-stage male die and a first driving mechanism, the first-stage male die is used for being matched with a stamping female die to stamp a plastic film part to form a first pre-pressing groove, and the second-stage male die is used for being matched with the stamping female die to form a second pre-pressing groove. The second-stage male die comprises two second-stage sub-dies arranged in the first containing groove of the first-stage male die in a sliding mode in the stamping direction and a first driving mechanism used for driving the two second-stage sub-dies to act, and under driving of the first driving mechanism, the two second-stage sub-dies can conduct secondary stamping on the plastic film part in the stamping direction and then conduct secondary stamping on the plastic film part in the stamping direction. And the punching female die expands outwards in the width direction of the first pre-pressing groove and is matched with the punching female die, so that the first pre-pressing groove is punched into a second pre-pressing groove. According to the stamping male die, under the action of the second-stage male die and the first driving mechanism, when a plastic film component is stamped, the plastic film component can be prevented from being torn, and then the stamping precision and quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of stamping technology, and in particular to a stamping punch. It also relates to a punching device having the stamping punch. Background Technology

[0002] Aluminum-plastic film consists of an outer nylon layer, an adhesive, a middle aluminum foil layer, an adhesive, and an inner heat-sealing layer. It is a multi-layer composite material commonly used for the outer packaging of soft-pack batteries.

[0003] In the processing of soft-pack batteries, if the parameters of the commonly used punching mold are not set properly or the mold sensitivity is low, the aluminum layer at the edge of the aluminum-plastic film will be overstretched, making the edge aluminum layer too thin. This results in greater stress and severe deformation at the edge bending point, eventually leading to tearing at the corner. This tearing will damage the integrity of the aluminum-plastic film, making it unable to effectively isolate water molecules in the air, thus affecting the performance and lifespan of the battery. Utility Model Content

[0004] In view of this, the present invention aims to provide a stamping punch that can solve the problem of edge tearing of plastic film parts during the stamping process.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A stamping punch for punching grooves in plastic film parts, comprising:

[0007] A primary punch is used to cooperate with a stamping die to stamp the plastic film component to form a first pre-pressing groove;

[0008] The secondary punch includes two secondary sub-dies that are slidably disposed in the first receiving groove of the primary punch along the stamping direction, and a first driving mechanism for driving the two secondary sub-dies to move.

[0009] Driven by the first driving mechanism, the two secondary sub-dies can stamp the plastic film component a second time along the stamping direction, and then expand outward along the width direction of the first pre-pressing groove and cooperate with the stamping die to stamp the first pre-pressing groove into a second pre-pressing groove.

[0010] Furthermore, the first driving mechanism includes a first driving unit, which is connected to the two secondary sub-modules via a first linkage component.

[0011] Furthermore, the first linkage component includes two first connecting rods, one end of which is hinged to the driving end of the first driving part, and the other ends of the two first connecting rods are respectively hinged to each of the secondary sub-molds, and an elastic element is provided between the two secondary sub-molds. The elastic element is used to provide the two secondary sub-molds with a force that moves away from each other along the width direction of the first pre-compression groove.

[0012] Furthermore, each of the first connecting rods is hinged to the corresponding first short rod on the secondary sub-mold, and the two ends of the elastic member respectively abut against the two first short rods.

[0013] Furthermore, guide rods arranged along the width direction of the first pre-compression groove are passed through the two first short rods, and the elastic element includes a spring sleeved on the guide rod.

[0014] Furthermore, the stamping punch also includes two tertiary sub-dies that are slidably disposed in the second receiving groove of the secondary punch along the stamping direction, and a second driving mechanism for driving the two tertiary sub-dies to move; under the drive of the second driving mechanism, the two tertiary sub-dies can stamp the plastic film component three times along the stamping direction, and then expand outward along the width direction of the first pre-pressing groove and cooperate with the stamping die to stamp the second pre-pressing groove into a third pre-pressing groove.

[0015] Furthermore, the first linkage component and the drive end of the first drive unit are connected by a mounting bracket; the second drive mechanism includes a second drive unit disposed on the mounting bracket, and the second drive unit is connected to the two third-level sub-modules through the second linkage component.

[0016] Furthermore, the first receiving groove is provided with limiting members on its groove wall for limiting the position of each of the secondary sub-molds.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] The stamping punch described in this invention, through the step-by-step stamping of a primary punch and a secondary punch, can more precisely control the forming process of the plastic film component, enabling preliminary forming, reducing one-time pressure, and preventing tearing of the plastic film component's edges and corners during stamping. Furthermore, the primary punch first forms a first pre-compression groove in the plastic film component, providing a foundation for subsequent fine processing. The secondary punch's second stamping can more meticulously adjust and correct the shape of the first pre-compression groove, ensuring that the final formed second pre-compression groove is more accurate and consistent. This solves the problem of edge and corner tearing of the plastic film component during stamping, thereby improving the quality of the finished battery product.

[0019] Secondly, the first drive unit is connected to the two secondary sub-dies through the first linkage component, which can ensure the synchronous movement of the two secondary sub-dies and avoid deformation and tearing of the plastic film parts due to asynchronous movement during stamping. In addition, the first linkage component can precisely control the position of the secondary sub-dies to ensure that the position and force of each stamping are consistent, thereby improving the accuracy and quality of stamping.

[0020] Furthermore, the elastic element provides a force to the two secondary sub-dies to move away from each other along the width direction of the first pre-compression groove. When the first drive unit drives the two first connecting rods downward, it can drive the two secondary sub-dies to descend synchronously. After the secondary sub-dies disengage from the first receiving groove, the first drive unit continues to drive the two first connecting rods to descend. The two secondary sub-dies will move away from each other under the action of the elastic element, so that the two secondary sub-dies can expand outward along the width direction of the first pre-compression groove and cooperate with the stamping die to stamp the first pre-compression groove into a second pre-compression groove, thereby achieving automatic adjustment and improving efficiency.

[0021] Furthermore, by hingedly connecting the first connecting rod to the first short rod and placing an elastic element between the two first short rods, the entire structure is more integrated and compact, reducing unnecessary connecting parts and support structures, making the entire device simpler, and making full use of the limited space within the first receiving slot, reducing the occupied area. In addition, step-by-step stamping can gradually apply pressure, avoiding excessive stretching or deformation of the plastic film component caused by applying excessive pressure at once. This ensures that the material is evenly stressed in all directions, reducing local stress concentration. Especially for the edge parts, it can effectively reduce excessive stretching and further prevent tearing of the plastic film component.

[0022] Another objective of this invention is to provide a punching device, comprising a stamping die with a forming groove, and a stamping punch arranged as described above corresponding to the forming groove.

[0023] Furthermore, the punching device also includes two pressure plates for pressing the plastic film component onto the stamping die, the two pressure plates being disposed on opposite sides of the forming groove.

[0024] Compared with the prior art, the punching device of this utility model can gradually form the plastic film component through multi-stage punching, more accurately control the shape and size of the plastic film component, avoid deformation and tearing of the plastic film component caused by one-time punching, and achieve higher punching accuracy. Attached Figure Description

[0025] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0026] Figures 1 to 4These are structural views of the stamping punch described in this embodiment under different usage conditions;

[0027] Figure 5 This is a structural view of the first linkage component described in this embodiment;

[0028] Figure 6 This is another structural schematic diagram of the first linkage component described in this embodiment;

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Primary punch; 101. First receiving groove; 1011. Limiting component;

[0031] 2. Stamping die;

[0032] 3. Secondary punch; 301. Secondary sub-die; 302. Second receiving groove;

[0033] 4. First drive mechanism; 401. First drive unit; 402. First linkage assembly; 4021. First connecting rod; 4022. Elastic element; 4023. First short rod; 4024. Guide rod;

[0034] 5. Third-level sub-mold; 501. Second drive mechanism; 5011. Second drive unit; 5012. Second linkage component;

[0035] 6. Mounting bracket; 7. Pressure plate; 8. Plastic film component; 9. Double piston rod cylinder. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0037] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0038] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0040] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] Example 1

[0042] This embodiment relates to a stamping punch that can solve the problem of edge tearing of the plastic film component 8 during the stamping process, thereby improving the quality of the finished battery product.

[0043] In terms of overall structure, such as Figures 1 to 6 As shown, this embodiment discloses a stamping punch used for punching grooves in a plastic film component 8. It includes a primary punch 1 and a secondary punch 3. The primary punch 1 cooperates with a stamping die 2 to stamp the plastic film component 8 to form a first pre-pressed groove. The secondary punch 3 includes two secondary sub-dies 301 slidably disposed in a first receiving groove 101 of the primary punch 1 along the stamping direction, and a first driving mechanism 4 for driving the two secondary sub-dies 301 to move.

[0044] Furthermore, under the drive of the first drive mechanism 4, the two secondary sub-dies 301 can stamp the plastic film component 8 twice along the stamping direction, and then expand outward along the width direction of the first pre-pressing groove and cooperate with the stamping die 2 to stamp the first pre-pressing groove into the second pre-pressing groove.

[0045] At this time, with the above settings, during the stamping process, the forming process of the plastic film part 8 can be more precisely controlled by the step-by-step stamping of the primary punch 1 and the secondary punch 3, so that preliminary forming can be achieved, the pressure of one-time operation can be reduced, and the corners of the plastic film part 8 can be prevented from tearing during the stamping process. Furthermore, the primary punch 1 first cooperates with the forming groove on the stamping die 2 to form the first pre-compression groove of the plastic film part 8, which can provide a foundation for subsequent fine processing. The secondary punch 3 can more finely adjust and correct the shape of the first pre-compression groove, ensuring that the final formed second pre-compression groove is more accurate and consistent.

[0046] Based on the above overview, in detail, in this embodiment, the plastic film component 8 is specifically an aluminum-plastic film for manufacturing soft-pack batteries. Furthermore, as a preferred embodiment, refer to... Figure 1 As shown, the first drive mechanism 4 includes a first drive unit 401, which is connected to two secondary sub-modules 301 via a first linkage component 402.

[0047] Specifically, the first drive unit 401 is a first cylinder. The first drive unit 401 is connected to two secondary sub-dies 301 through the first linkage component 402, which can ensure the synchronous operation of the two secondary sub-dies 301, and avoid deformation and tearing of the plastic film part 8 due to asynchronous operation during stamping. In addition, the first linkage component 402 can precisely control the position of the secondary sub-dies 301, ensuring that the position and force of each stamping are consistent, thereby improving the accuracy and quality of stamping.

[0048] Furthermore, in this embodiment, as a preferred implementation, reference is made to... Figure 5 As shown, the first linkage assembly 402 includes two first connecting rods 4021, one end of which is hinged to the driving end of the first driving part 401, and the other ends of the two first connecting rods 4021 are respectively hinged to each secondary sub-mold 301. An elastic element 4022 is provided between the two secondary sub-molds 301. The elastic element 4022 is used to provide the two secondary sub-molds 301 with a force that moves away from each other along the width direction of the first pre-compression groove.

[0049] When the first drive unit 401 drives the two first connecting rods 4021 downwards, it can drive the two secondary sub-dies 301 to descend synchronously. When the secondary sub-dies 301 disengages from the first receiving groove 101, and the first drive unit 401 continues to drive the two first connecting rods 4021 downwards, under the action of the elastic element 4022, the upper surfaces of the two secondary sub-dies 301 will abut against the lower surface of the first punch, and the two secondary sub-dies 301 will move away from each other, so that the two secondary sub-dies 301 can expand outwards along the width direction of the first pre-pressing groove. When the side of the width of the two secondary sub-dies 301 is flush with the side of the width of the first punch, and cooperates with the stamping die 2, the first pre-pressing groove can be stamped into the second pre-pressing groove. The position of the secondary sub-dies 301 can be automatically adjusted to improve efficiency.

[0050] In addition, the elastic element 4022 can be replaced by a double piston rod cylinder 9. The two piston rod ends of the double piston rod cylinder 9 are respectively connected to the two sub-molds. By controlling the extension and retraction of its piston rods through the double piston rod cylinder 9, the two sub-molds can be driven to move closer or further away from each other along the width direction of the first pre-compression groove.

[0051] In this embodiment, as a preferred implementation, reference is made to... Figure 5 As shown, each first link 4021 is hinged to the first short rod 4023 on the corresponding secondary sub-mold 301, and the two ends of the elastic member 4022 abut against the two first short rods 4023 respectively.

[0052] By hingedly connecting the first connecting rod 4021 to the first short rod 4023 and setting an elastic element 4022 between the two first short rods 4023, the whole structure is more integrated and compact, reducing unnecessary connecting parts and support structures, making the whole device simpler, and making full use of the limited space in the first receiving slot 101, reducing the occupied area.

[0053] Secondly, in this embodiment, as a preferred implementation, refer to Figure 5 As shown, guide rods 4024, arranged along the width direction of the first pre-compression groove, are passed through the two first short rods 4023, and the elastic element 4022 includes a spring sleeved on the guide rod 4024. The guide rods 4024 can ensure that the two first short rods 4023 maintain linear motion when moving along the width direction of the first pre-compression groove, avoiding deviation and tilting, thereby ensuring the moving direction of the two secondary sub-molds 301, so that the two secondary sub-molds 301 can be adjusted to a precise position under the action of the first drive unit 401, and then the first pre-compression groove is stamped into the second pre-compression groove.

[0054] In addition, in this embodiment, as a preferred implementation, reference is made to... Figure 3As shown, the stamping punch also includes two tertiary sub-dies 5 that are slidably disposed in the second receiving groove 302 of the secondary punch 3 along the stamping direction, and a second driving mechanism 501 for driving the two tertiary sub-dies 5 to move. Under the drive of the second driving mechanism 501, the two tertiary sub-dies 5 can stamp the plastic film component 8 three times along the stamping direction, and then expand outward along the width direction of the first pre-pressing groove and cooperate with the stamping die 2 to stamp the second pre-pressing groove into a third pre-pressing groove.

[0055] The plastic film component 8 can be stamped three times through the primary punch 1, the secondary sub-die 301, and the tertiary sub-die 5. The primary punch 1 forms the first pre-pressing groove, the secondary sub-die 301 forms the second pre-pressing groove, and the tertiary sub-die 5 forms the third pre-pressing groove. By gradually refining and correcting the process, the pre-pressing groove of the final product is more accurate and consistent, and the forming process of the plastic film component 8 is precisely controlled.

[0056] Furthermore, step-by-step stamping can gradually apply pressure, avoiding excessive stretching or deformation of the material caused by applying too much pressure at once. It can ensure that the material is subjected to force evenly in all directions, reducing local stress concentration. Especially for the edge parts, it can effectively reduce excessive stretching and further prevent the plastic film parts from thinning and tearing.

[0057] It should be noted that, in this embodiment, as a preferred implementation, reference is made to... Figure 1 As shown, the driving ends of the first linkage component 402 and the first driving part 401 are connected by the mounting bracket 6. The second driving mechanism 501 includes a second driving part 5011 disposed on the mounting bracket 6. The second driving part 5011 is connected to two three-level sub-modules 5 through the second linkage component 5012.

[0058] Specifically, the second drive unit 5011 is a second cylinder, and the second linkage assembly 5012 has the same structure as the first linkage assembly 402. The second drive assembly includes two second connecting rods, one end of which is hinged to the drive end of the second drive unit 5011, and the other ends of the two second connecting rods are respectively hinged to the second short rods on each of the three-stage sub-molds 5, and an elastic element 4022 is provided between the two second short rods.

[0059] When the lower end of the secondary sub-mold 301 needs to extend out of the first receiving groove 101 to press the plastic film component 8 into the second pre-pressing groove, the mounting frame 6 can be driven to descend by the first driving unit 401. At the same time, the mounting frame 6 will drive the two secondary sub-molds 301 to descend synchronously through the first linkage component 402. Furthermore, the mounting frame 6 can also drive the two tertiary sub-molds 5 to descend together through the second driving unit 5011 and the second driving component, making the operation more convenient.

[0060] Similarly, when two tertiary sub-molds 5 need to extend from the second receiving groove 302, the second driving part 5011 can drive the two tertiary sub-molds 5 to extend through the second linkage component 5012. After the tertiary sub-molds 5 are fully extended, the tertiary sub-molds 5 can expand outward along the width direction of the first pre-pressing groove under the action of the elastic member 4022, and cooperate with the forming groove on the stamping die 2 to stamp the second pre-pressing groove into the third pre-pressing groove.

[0061] It is worth mentioning that, in this embodiment, as a preferred implementation, reference is made to... Figure 1 As shown, the first receiving groove 101 has a limiting member 1011 on its groove wall for limiting the position of each secondary sub-mold 301. When the first driving unit 401 drives the two secondary sub-molds 301 to rise in the first receiving groove 101, the limiting member 1011 can limit the rising height of the two secondary sub-molds 301, ensuring that the lower surface of the secondary sub-mold 301 is flush with the lower surface of the first punch, thus ensuring the forming quality of the first pre-pressing groove.

[0062] Example 2

[0063] This embodiment relates to a punching device, including a stamping die 2 with a forming groove, and a stamping punch arranged as described above corresponding to the forming groove. The plastic film part 8 can be formed step by step through multi-stage stamping, which can more accurately control the shape and size of the plastic film part 8, avoid deformation and tearing of the plastic film part 8 caused by one-time stamping, and achieve higher stamping accuracy.

[0064] In addition, in this embodiment, as a preferred implementation, refer to Figure 1 As shown, the punching device also includes two pressure plates 7 for pressing the plastic film component 8 onto the stamping die 2. The two pressure plates 7 are respectively disposed on two opposite sides of the forming groove. The two pressure plates 7 can ensure that the plastic film component 8 is firmly fixed on the stamping die 2 during the stamping process, avoiding large forming errors caused by the movement of the plastic film component 8.

[0065] It is understandable that the two pressure plates 7 can be set separately to press the plastic film component 8, or to press the plastic film component 8 by following the rise and fall of the stamping punch. Both can achieve the pressing effect. Similarly, other methods can also be used, which will not be elaborated here.

[0066] In practice, the plastic film component 8 is first laid flat on the stamping die 2, and then the pressure plates 7 on both sides of the stamping die 2 are fixed to ensure that the plastic film component 8 between the pressure plates 7 and the stamping die 2 will not be displaced. Then, the first-stage punch 1 stamps the plastic film component 8 to a depth of 1 / 3 of the design depth. Then, the first drive mechanism 4 drives the two second-stage sub-dies 301 to descend and stamp the plastic film component 8 a second time to a depth of 1 / 3 of the design depth. Subsequently, the second drive mechanism 501 drives the two third-stage sub-dies 5 to descend and stamp the plastic film component 8 a third time to a depth of 1 / 3 of the design depth.

[0067] Finally, the first drive mechanism 4 drives the two secondary sub-molds 301 to expand outward along the width direction of the first pre-pressing groove, and the second drive mechanism 501 drives the two tertiary sub-molds 5 to expand outward along the width direction of the first pre-pressing groove, and cooperates with the forming groove on the stamping die 2 to stamp the plastic film part 8.

[0068] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stamping punch for punching grooves into plastic film parts, characterized in that... include: A primary punch is used to cooperate with a stamping die to stamp the plastic film component to form a first pre-pressing groove; The secondary punch includes two secondary sub-dies that are slidably disposed in the first receiving groove of the primary punch along the stamping direction, and a first driving mechanism for driving the two secondary sub-dies to move. Driven by the first driving mechanism, the two secondary sub-dies can stamp the plastic film component a second time along the stamping direction, and then expand outward along the width direction of the first pre-pressing groove and cooperate with the stamping die to stamp the first pre-pressing groove into a second pre-pressing groove.

2. The stamping punch according to claim 1, characterized in that: The first driving mechanism includes a first driving part, which is connected to the two secondary sub-modules via a first linkage component.

3. The stamping punch according to claim 2, characterized in that: The first linkage component includes two first connecting rods, one end of which is hinged to the driving end of the first driving part, and the other ends of the two first connecting rods are respectively hinged to each of the secondary sub-molds. An elastic element is provided between the two secondary sub-molds, and the elastic element is used to provide a force to the two secondary sub-molds to move away from each other along the width direction of the first pre-compression groove.

4. The stamping punch according to claim 3, characterized in that: Each of the first connecting rods is hinged to the corresponding first short rod on the secondary sub-mold, and the two ends of the elastic element abut against the two first short rods respectively.

5. The stamping punch according to claim 4, characterized in that: Guide rods are provided on the two first short rods and arranged along the width direction of the first pre-compression groove, and the elastic element includes a spring sleeved on the guide rod.

6. The stamping punch according to claim 2, characterized in that: It also includes two tertiary sub-dies that are slidably disposed in the second receiving groove of the secondary punch along the stamping direction, and a second driving mechanism for driving the two tertiary sub-dies to move; Driven by the second driving mechanism, the two third-level sub-dies can press the plastic film component three times along the stamping direction, and then expand outward along the width direction of the first pre-pressing groove and cooperate with the stamping die to press the second pre-pressing groove into a third pre-pressing groove.

7. The stamping punch according to claim 6, characterized in that: The first linkage component and the drive end of the first drive unit are connected by a mounting bracket; The second drive mechanism includes a second drive unit disposed on the mounting bracket, and the second drive unit is connected to the two third-level sub-modules through a second linkage component.

8. The stamping punch according to any one of claims 1 to 7, characterized in that: The first receiving groove is provided with limiting members on its groove wall for limiting the position of each of the secondary sub-molds.

9. A ditch flushing device, characterized in that: It includes a stamping die with a forming groove, and a stamping punch according to any one of claims 1 to 8 arranged corresponding to the forming groove.

10. The ditch flushing device according to claim 9, characterized in that: It also includes two pressure plates for pressing the plastic film component onto the stamping die, the two pressure plates being disposed on opposite sides of the forming groove.

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