Cutter structure and tab cutting device

Abstract

The utility model relates to the technical field of battery preparation, and discloses a cutter structure and a tab cutting device.The cutter structure comprises an upper cutter assembly, the upper cutter assembly comprises an upper cutter, a driving plate, a material pressing plate and a guide block, the driving plate is movably connected with the material pressing plate in a lifting mode, and the guide block is connected with the upper cutter; an I-shaped step-shaped blade is arranged at one end of the upper cutter, the other end of the upper cutter is arranged on the driving plate, the guide block is arranged on the pressing plate, a guide hole matched with the upper cutter is formed in the guide block, and the blade ascends and descends in the guide hole; the lower cutting die assembly comprises a lower die plate and a lower cutting die, the lower cutting die is arranged on the lower die plate, the lower cutting edge is provided with a cutting edge matched with the cutting edge, and the guide hole corresponds to the cutting edge in position; and during cutting, the cutting edge part penetrates out of the guide hole and enters the cutting edge, so that cutting is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of battery preparation, in particular to a cutter structure and a tab cutting device. Background Art

[0002] The existing battery tab cutting technology generally adopts the method of feeding the tab to a fixed length, and its cutting blade structure is mostly conventional upper and lower blade bite shearing. Although this method meets the production needs to a certain extent, there are still many problems that need to be solved in the actual operation:

[0003] First, the cut-to-length process will result in cumulative tolerances during the continuous production process. This tolerance will gradually increase as the production process progresses, seriously affecting the cutting accuracy. In order to ensure the cutting quality, manufacturers need to frequently debug, which not only increases production costs, but also greatly reduces production efficiency.

[0004] Second, the cutting effect of conventional cutters is not ideal, and the cutting life is relatively low. In particular, the burr problem generated during the cutting process can only be controlled to ≤20μm, which may pose a potential threat to the performance and safety of the battery.

[0005] Third, conventional cutters usually use two-stage cutting, which easily leads to waste flying away and the generated metal debris is difficult to control. These metal debris may not only pollute the production environment, but also mix into the product, posing a serious threat to the performance and safety of the battery.

[0006] Therefore, it is necessary to develop a new cutter structure to solve the above problems in order to improve the efficiency and quality of battery manufacturing. Summary of the invention

[0007] The utility model aims to overcome the deficiencies in the prior art and provide a cutter structure and a tab cutting device, which can improve cutting accuracy, extend cutting life, reduce burrs and effectively control waste and metal debris.

[0008] The purpose of this utility model is achieved through the following technical solutions:

[0009] A cutting knife structure, comprising:

[0010] An upper cutter assembly, the upper cutter assembly comprising an upper cutter, a driving plate, a pressing plate and a guide block, the driving plate and the pressing plate being movably connected so as to be lifted and lowered, one end of the upper cutter being provided with a blade in the shape of an I-shaped step, the other end of the upper cutter being provided on the driving plate, the guide block being provided on the pressing plate, the guide block being provided with a guide hole matching the upper cutter, the blade being lifted and lowered in the guide hole;

[0011] A lower cutting die assembly, the lower cutting die assembly comprises a lower template and a lower cutting die, the lower cutting die is arranged on the lower template, the lower cutting die is provided with a cutting edge matching the cutting edge, and the guide hole corresponds to the position of the cutting edge;

[0012] During cutting, the blade portion passes through the guide hole and enters the cutting edge to complete the cutting.

[0013] In one embodiment, the blade includes a blade portion and raised portions provided at both ends of the blade portion along the length direction, the width of the raised portions is greater than the width of the blade portion, and the raised portions protrude from the end surface of the blade portion.

[0014] In one embodiment, the upper cutter assembly further includes a connecting column, a clamping portion is provided at one end of the connecting column, a connecting hole is provided on the driving plate, the diameter of the clamping portion is larger than the inner diameter of the connecting hole, the connecting column body is smaller than the connecting hole, and the end of the connecting column away from the clamping portion passes through the connecting hole and is connected to the pressing plate.

[0015] In one embodiment, the upper cutter assembly also includes a first guide member, which includes a first guide column and a matching first guide bushing, the first guide bushing is fixedly disposed on the pressing plate, one end of the first guide column is disposed on the driving plate, and the other end of the first guide column is movably inserted into the first guide bushing.

[0016] In one embodiment, the upper cutting knife assembly further comprises a plurality of elastic members, a plurality of first accommodating grooves are formed on a side of the pressing plate close to the driving plate, and a plurality of second accommodating grooves are formed on a side of the driving plate close to the pressing plate, the plurality of first accommodating grooves correspond one to one to the plurality of second accommodating grooves, and both ends of each of the elastic members are respectively accommodated in the corresponding first accommodating groove and the second accommodating groove.

[0017] In one embodiment, the upper cutter assembly further comprises a plurality of height limiting columns, which are evenly distributed on a side of the pressure plate close to the driving plate, and are used to support the driving plate to control the shortest distance between the driving plate and the pressure plate.

[0018] A tab cutting device comprises: a cutting knife structure, a mounting bracket, a lifting drive, an upper pressure plate, a lower pad and a feeding assembly, wherein the lifting drive is arranged on the mounting bracket, the upper pressure plate is connected to the output end of the lifting drive, the lower pad is correspondingly arranged below the upper pressure plate through the mounting bracket, the upper cutting knife assembly is arranged on the upper pressure plate, the lower cutting die assembly is correspondingly arranged on the lower pad, the feeding assembly is used to transfer the tab to be cut to the lower cutting die assembly, and the lifting drive is used to drive the upper pressure plate to perform lifting and movement so that the upper cutting knife assembly can cooperate with the lower cutting die assembly to complete the tab cutting.

[0019] In one embodiment, the feeding assembly includes a material guide member and a sensing device, the material guide member is provided with a material guide channel, the material guide channel is used for limiting the passage of the pole ear, the sensing device is embedded in the material guide member, and the sensing device is used to sense the passage length of the pole ear.

[0020] In one embodiment, the tab cutting device also includes a second guide member, which includes a second guide column and a matching second guide bushing, the second guide bushing is arranged on the lower pad, one end of the second guide column is arranged on the upper pressure plate, and the other end of the second guide column is movably inserted into the second guide bushing.

[0021] In one embodiment, the tab cutting device further includes a waste collection funnel, which is disposed below the lower cutting die assembly and is used to collect tab waste.

[0022] Compared with the prior art, the utility model has at least the following advantages:

[0023] The I-shaped step design of the upper cutter in the cutter structure provided by the utility model not only enhances the structural strength of the cutter body, but also effectively avoids the hard collision between the cutter edge and the lower cutter die by first introducing the protrusions on both sides into the cutting edge, thereby reducing the impact force during the cutting process, thereby protecting the integrity of the blade, extending the service life of the tool and reducing burr generation. Furthermore, the guide block ensures the stability and accuracy of the upper cutter during the lifting and lowering activities, further improving the precision and quality of cutting. Finally, the upper cutter in the shape of an I-shaped step is a thick knife that can be punched and formed in one time, effectively controlling the escape of waste materials during the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic structural diagram of a cutter structure according to an embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the upper cutter, guide block and lower cutter die structure of the cutter structure of one embodiment of the utility model;

[0027] Figure 3 This is a schematic structural diagram of a tab cutting device according to an embodiment of the utility model;

[0028] Figure 4 for Figure 3 A schematic structural diagram of the tab cutting device from another angle.

[0029] The numbers in the figure are: 10, tab cutting device; 100, cutter structure; 110, upper cutter assembly; 111, upper cutter; 1111, blade; 1111a, blade portion; 1111b, raised portion; 112, drive plate; 113, press plate; 114, guide block; 1141, guide hole; 115, connecting column; 116, first guide member; 117, elastic member; 118, height limiting column; 120, lower cutting die assembly; 121, lower template; 122, lower cutting die; 1221, cutting edge; 200, mounting bracket; 300, lifting drive member; 400, upper pressure plate; 500, lower pad; 600, feeding assembly; 610, guide member; 611, guide channel; 620, induction device; 700, second guide member; 800, waste collection funnel. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0031] See also Figure 1 and Figure 2A cutting knife structure (100) comprises: an upper cutting knife assembly (110) and a lower cutting die assembly (120); the upper cutting knife assembly (110) comprises an upper cutting knife (111), a driving plate (112), a pressing plate (113) and a guide block (114); the driving plate (112) and the pressing plate (113) are movably connected to each other in a lifting manner; one end of the upper cutting knife (111) is provided with a blade (1111) in the shape of an I-shaped step; the other end of the upper cutting knife (111) is provided on the driving plate (112); the guide block (114) is provided on the pressing plate (113); the guide block (114) is provided with A guide hole (1141) matches the upper cutting knife (111), and the blade (1111) performs lifting and lowering movements in the guide hole (1141); the lower cutting die assembly (120) comprises a lower template (121) and a lower cutting die (122); the lower cutting die (122) is arranged on the lower template (121), and the lower cutting die (122) is provided with a cutting edge (1221) matching the blade (1111), and the guide hole (1141) corresponds to the position of the cutting edge (1221); when cutting, the blade (1111) passes through the guide hole (1141) and enters the cutting edge (1221) to complete the cutting.

[0032] It should be noted that the electrode ear to be cut is placed on the lower cutting die (122). When cutting begins, the driving plate (112) drives the upper cutting knife (111) to move downward. The pressing plate (113) is driven by the driving plate (112) to first fit and abut against the lower template (121) to press and position the electrode ear to be cut. During the cutting process, the blade (1111) part will first be accurately guided by the guide hole (1141) of the guide block (114), and then pass through the guide hole (1141) to move toward the cutting edge (1221). When the blade (1111) enters the cutting edge (1221), it will cooperate with the cutting edge (1221) of the lower cutting die (122) to complete the cutting of the electrode ear. After cutting is completed, the driving plate (112) will rise, driving the upper cutting knife (111) and the pressing plate (113) to return to the initial position to prepare for the next cutting.

[0033] The upper cutter (111) is the main execution part of the cutting action. The blade (1111) is designed in an I-shaped step shape, which enhances the structural strength and cutting stability. At the same time, it effectively avoids the hard collision between the blade and the lower cutting die (122), reduces the impact force during the cutting process, thereby protecting the integrity of the blade (1111), extending the service life of the tool and reducing burr generation; the main function of the guide block (114) is to ensure that the upper cutter (111) The blade (1111) can accurately and stably enter the cutting edge (1221), and the close fit between the guide hole (1141) and the blade (1111) effectively reduces the shaking and deviation of the blade (1111) during the cutting process, thereby improving the cutting accuracy and quality; further, the cut tab waste enters the cutting edge (1221) along with the upper cutting knife (111) and flows out from the channel below the cutting edge (1221), thereby preventing the waste from splashing and contaminating the finished tab product.

[0034] See also Figure 2 Furthermore, the blade (1111) includes a blade (1111) portion and raised portions (1111b) arranged at both ends of the blade (1111) portion along the length direction, the width of the raised portion (1111b) is greater than the width of the blade (1111) portion, and the raised portion (1111b) protrudes from the end surface of the blade (1111) portion.

[0035] It should be noted that the blade (1111) is composed of a blade (1111) portion and raised portions (1111b) at both ends. The raised portion (1111b) is wider than the blade (1111) portion and protrudes outward from the end surface of the blade (1111). This design enhances the structural stability of the blade (1111). When cutting, the raised portions (1111b) at both ends can enter the cutting edge (1221) first, effectively avoiding a hard collision between the blade (1111) and the cutting edge (1221), thereby protecting the integrity of the blade (1111), extending the service life of the upper cutter (111), and reducing the generation of burrs on the pole ear.

[0036] See also Figure 1 Furthermore, the upper cutter assembly (110) also includes a connecting column (115), one end of which is provided with a clamping portion, the driving plate (112) is provided with a connecting hole, the diameter of the clamping portion (1151) is larger than the inner diameter of the connecting hole, the connecting column (115) body is smaller than the connecting hole, and the end of the connecting column (115) away from the clamping portion passes through the connecting hole and is connected to the pressing plate (113).

[0037] It should be noted that, in the uncut state, the pressing plate (113) is suspended below the driving plate (112) through the connecting column (115), and the clamping part is abutted against the driving plate (112). When the driving plate (112) moves downward, the pressing plate (113) is first abutted against the lower template (121) under the drive of the driving plate (112). The pressing plate (113) first presses and fixes the electrode ear to be cut, and then the driving plate (112) continues to drive downward, so that the upper cutter (111) passes through the guide hole (1141) and then aligns with the cutting edge (1221) to complete the cutting. In this way, the cutting accuracy and the flatness of the edge of the electrode ear can be improved.

[0038] See also Figure 1 Furthermore, the upper cutter assembly (110) also includes a first guide member (116), the first guide member (116) includes a first guide column and a matching first guide bushing, the first guide bushing is fixedly arranged on the pressing plate (113), one end of the first guide column is arranged on the driving plate (112), and the other end of the first guide column is movably inserted into the first guide bushing.

[0039] It should be noted that, during the operation of the cutter structure (100), the drive plate (112) drives the upper cutter (111) to move up and down to complete the cutting action. At this time, the cooperation between the first guide column and the first guide bushing can ensure that the upper cutter (111) moves smoothly and accurately in the vertical direction, providing a precise guide path and preventing the upper cutter (111) from deviating or shaking during the movement.

[0040] See also Figure 1 Furthermore, the upper cutter assembly (110) further comprises a plurality of elastic members (117), a plurality of first receiving grooves are provided on one side of the pressing plate (113) close to the driving plate (112), a plurality of second receiving grooves are provided on one side of the driving plate (112) close to the pressing plate (113), the plurality of first receiving grooves correspond to the plurality of second receiving grooves one by one, and the two ends of each elastic member (117) are respectively received in the corresponding first receiving groove and the second receiving groove.

[0041] It should be noted that the elastic member (117) provides a buffering function. During the cutting process, the upper cutter (111) is subjected to impact and vibration, and the presence of the elastic member (117) can effectively absorb these impacts and reduce the impact of the vibration on the entire cutter structure (100). This not only protects the upper cutter (111) and other components from damage, but also improves the cutting accuracy and stability.

[0042] See also Figure 1Furthermore, the upper cutter assembly (110) further comprises a plurality of height limiting columns (118), wherein the plurality of height limiting columns (118) are evenly distributed on a side of the pressing plate (113) close to the driving plate (112), and the plurality of height limiting columns (118) are used to support the driving plate (112) to control the shortest distance between the driving plate (112) and the pressing plate (113).

[0043] It should be noted that the height limiting column (118) effectively prevents the driving plate (112) and the pressing plate (113) from being too close to each other, thereby avoiding possible collision and damage, which not only protects the device itself, but also ensures stability and accuracy during the cutting process.

[0044] See also Figure 3 and Figure 4 The utility model also provides a tab cutting device (10), comprising: a cutter structure (100), a mounting bracket (200), a lifting drive member (300), an upper pressing plate (400), a lower pad (500) and a feeding assembly (600), wherein the lifting drive member (300) is arranged on the mounting bracket (200), the upper pressing plate (400) is connected to the output end of the lifting drive member (300), and the lower pad (500) is arranged corresponding to the mounting bracket (200). The upper cutting blade assembly (110) is arranged below the upper pressing plate (400), the lower cutting die assembly (120) is correspondingly arranged on the lower pad (500), the feeding assembly (600) is used to transfer the tabs to be cut to the lower cutting die assembly (120), and the lifting drive member (300) is used to drive the upper pressing plate (400) to move upward and downward, so that the upper cutting blade assembly (110) can cooperate with the lower cutting die assembly (120) to complete the cutting of the tabs.

[0045] It should be noted that the mounting bracket (200) is the supporting base of the entire device, which stably carries each working component to ensure its accurate position so as to perform high-precision cutting operations; the lifting drive (300) accurately controls the upper pressure plate (400) to move up and down smoothly and accurately; the upper pressure plate (400) is tightly connected to the output end of the lifting drive (300), and it carries the upper cutter assembly (110), and under the drive of the lifting drive (300), the upper cutter assembly (110) can be accurately matched with the lower cutting die assembly (120), thereby completing the cutting of the pole ear; the lower pad (500) is connected to the upper pressure plate (400) by the mounting bracket (200). The frame (200) is stably arranged below the upper pressing plate (400), and corresponds to the upper pressing plate (400), providing a stable working platform for the cutting operation; the lower pad (500) is provided with a lower cutting die assembly (120), which matches with the upper cutting knife assembly (110), and together constitutes the core part of the cutting; the feeding assembly (600) is an important part of the device, and is responsible for automatically transferring the tab to be cut to the lower cutting die assembly (120), so as to prepare for the subsequent cutting operation. The tab cutting device (10) realizes efficient and accurate tab cutting through the close cooperation and precise control of various components.

[0046] See also Figure 3 and Figure 4 Furthermore, the feeding assembly (600) includes a material guide member (610) and a sensing device (620), the material guide member (610) is provided with a material guide channel (611), the material guide channel (611) is used for limiting the passage of the pole ear, and the sensing device (620) is embedded in the material guide member (610), and the sensing device (620) is used to sense the passage length of the pole ear.

[0047] It should be noted that the channel not only provides a limited passage space for the tab, ensuring that it can enter the cutting area stably and orderly, but also guides the tab, laying the foundation for subsequent precise cutting. The sensing device (620) is cleverly embedded in the material guide (610). Its main function is to sense the passage length of the tab in the channel. Through this device, the cutting device can obtain the position information of the tab in real time and accurately, thereby ensuring the accuracy and efficiency of cutting.

[0048] See also Figure 3 and Figure 4 Furthermore, the tab cutting device (10) also includes a second guide member (700), the second guide member (700) includes a second guide column and a matching second guide bushing, the second guide bushing is arranged on the lower pad (500), one end of the second guide column is arranged on the upper pressure plate (400), and the other end of the second guide column is movably inserted into the second guide bushing.

[0049] Thus, by introducing the second guide column and the second guide bushing, the verticality and stability of the upper pressing plate (400) during the lifting process are ensured, possible deviation or tilting is prevented, and the service life of the device is extended by reducing friction and vibration. Furthermore, a spring member can be sleeved on the second guide column to provide a buffering effect for the lifting and lowering movement of the upper pressing plate (400), reduce impact and vibration, and extend the service life of the device.

[0050] See also Figure 3 and Figure 4 Furthermore, the tab cutting device (10) further includes a waste collection funnel (800), which is arranged below the lower die assembly (120) and is used to collect tab waste.

[0051] It should be noted that a material drop hole is provided under the cutting edge (1221), and the material drop hole is provided above the waste collection funnel (800). After the upper cutting knife (111) cuts the pole ear, the waste enters the material drop hole from the cutting edge (1221), and then falls from the material drop hole into the waste collection funnel (800). In this way, the pole ear waste generated during the cutting process can be automatically collected, ensuring the cleanliness of the cutting site and the timely disposal of the waste, and preventing the waste from splashing and falling into the finished pole ear.

[0052] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A cutting blade structure, characterized in that: include: An upper cutter assembly, the upper cutter assembly comprising an upper cutter, a driving plate, a pressing plate and a guide block, the driving plate and the pressing plate being movably connected so as to be lifted and lowered, one end of the upper cutter being provided with a blade in the shape of an I-shaped step, the other end of the upper cutter being provided on the driving plate, the guide block being provided on the pressing plate, the guide block being provided with a guide hole matching the upper cutter, the blade being lifted and lowered in the guide hole; A lower cutting die assembly, the lower cutting die assembly comprises a lower template and a lower cutting die, the lower cutting die is arranged on the lower template, the lower cutting die is provided with a cutting edge matching the cutting edge, and the guide hole corresponds to the position of the cutting edge; During cutting, the blade portion passes through the guide hole and enters the cutting edge to complete the cutting.

2. The cutter structure according to claim 1, characterized in that: The blade includes a blade portion and protrusions arranged at both ends of the blade portion along the length direction. The width of the protrusions is greater than the width of the blade portion, and the protrusions protrude from the end surface of the blade portion.

3. The cutter structure according to claim 1, characterized in that: The upper cutter assembly also includes a connecting column, one end of which is provided with a clamping portion, the driving plate is provided with a connecting hole, the diameter of the clamping portion is larger than the inner diameter of the connecting hole, the connecting column body is smaller than the connecting hole, and the end of the connecting column away from the clamping portion passes through the connecting hole and is connected to the pressing plate.

4. The cutter structure according to claim 1, characterized in that: The upper cutter assembly also includes a first guide member, which includes a first guide column and a matching first guide bushing, the first guide bushing is fixedly arranged on the pressing plate, one end of the first guide column is arranged on the driving plate, and the other end of the first guide column is movably inserted into the first guide bushing.

5. The cutter structure according to claim 1, characterized in that: The upper cutter assembly also includes a plurality of elastic members, a plurality of first accommodating grooves are provided on a side of the pressing plate close to the driving plate, and a plurality of second accommodating grooves are provided on a side of the driving plate close to the pressing plate. The plurality of first accommodating grooves correspond one to one to the plurality of second accommodating grooves, and both ends of each of the elastic members are respectively accommodated in the corresponding first accommodating groove and the second accommodating groove.

6. The cutter structure according to claim 1, characterized in that: The upper cutter assembly also includes a plurality of height-limiting columns, which are evenly distributed on a side of the pressure plate close to the drive plate, and are used to support the drive plate to control the shortest distance between the drive plate and the pressure plate.

7. A tab cutting device, characterized in that: include: The cutter structure, mounting bracket, lifting drive, upper pressure plate, lower pad and feeding assembly described in any one of claims 1 to 6, the lifting drive is arranged on the mounting bracket, the upper pressure plate is connected to the output end of the lifting drive, the lower pad is correspondingly arranged below the upper pressure plate through the mounting bracket, the upper cutter assembly is arranged on the upper pressure plate, the lower cutting die assembly is correspondingly arranged on the lower pad, the feeding assembly is used to transfer the pole ear to be cut to the lower cutting die assembly, and the lifting drive is used to drive the upper pressure plate to move up and down, so that the upper cutter assembly can cooperate with the lower cutting die assembly to complete the pole ear cutting.

8. The tab cutting device according to claim 7, characterized in that: The feeding assembly includes a material guide and a sensing device. The material guide is provided with a material guide channel, and the material guide channel is used for limiting the passage of the tab. The sensing device is embedded in the material guide, and the sensing device is used for sensing the passage length of the tab.

9. The tab cutting device according to claim 7, characterized in that: The tab cutting device also includes a second guide member, which includes a second guide column and a matching second guide bushing, the second guide bushing is arranged on the lower pad, one end of the second guide column is arranged on the upper pressure plate, and the other end of the second guide column is movably inserted into the second guide bushing.

10. The tab cutting device according to claim 7, characterized in that: The tab cutting device also includes a waste collection funnel, which is arranged below the lower cutting die assembly and is used to collect tab waste.

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