Adjustable lower die and coating die head thereof

Abstract

The utility model relates to the technical field of coating die heads, and discloses an adjustable lower die and a coating die head thereof.The adjustable lower die comprises a lower die body, a coating slit used for circulating slurry is formed between the lower die body and a middle die body, an adjusting groove is formed in the lower die body, the adjusting groove is communicated with the coating slit, and the lower die body is connected with the middle die body. An adjusting cavity is formed in the groove bottom of the adjusting groove; the lower die further comprises an adjusting assembly, the adjusting assembly comprises an adjusting seat, the adjusting seat is arranged in the adjusting cavity and slides in the adjusting cavity, an inclined groove is formed in the adjusting seat, and an adjusting wheel used for driving the adjusting seat to slide is arranged in the inclined groove; the push-pull assembly is connected with the adjusting wheel and used for driving the adjusting wheel to reciprocate; and the flow choking assembly is connected with the lower die in a sealed mode, the flow choking assembly comprises a flow choking block, the flow choking block is arranged on one side of the adjusting base, and the adjusting assembly drives the flow choking block to enter or leave the adjusting groove. The coating die head comprises an upper die, a middle die and a lower die, and the lower die is the adjustable lower die. The coating thickness adjusting device has the technical effects of improving the smoothness of adjusting the coating thickness and reducing the acting force of the push-pull assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of coating die heads, and in particular relates to an adjustable lower die and a coating die head thereof. Background Art

[0002] Coating is a key step in the production process of pole pieces. Coating is the process of extruding the flowing slurry onto the foil to form a functional film with a certain thickness and uniformity on the surface of the foil. During the coating process, the lateral consistency of the thickness, surface density uniformity and accuracy of the coating are key indicators for evaluating the quality of the coating and can affect the performance of the pole piece product.

[0003] In the related art, coating is mainly carried out through a coating die head, which includes an upper die and a lower die arranged relatively to each other, and a coating slit for slurry circulation is formed between the upper die and the lower die, wherein a lower lip and a deformation groove are arranged on the lower die, and the deformation groove is located below the lower lip, and a push-pull rod is arranged on one side of the deformation groove of the lower die, and the push-pull rod causes a slight deformation by pulling or pushing the deformation groove, thereby causing a slight deformation of the lower lip. The coating die head can adjust the gap size of the coating slit through the deformation of the lower lip, and then adjust the flow rate of the slurry in the coating slit to achieve the adjustment of the coating thickness.

[0004] However, when the coating die head deforms the deformation groove through the push-pull rod, a large force is usually required. The push-pull rod is difficult to adjust smoothly and is prone to breakage, which in turn affects the control of the coating adjustment. Utility Model Content

[0005] In order to address the deficiencies of the prior art, the utility model provides an adjustable lower die and a coating die head thereof, by which an adjusting wheel rolls along an inclined groove so that the blocking amount of the coating slit can be adjusted by the blocking component, which is beneficial to improving the smoothness of the coating thickness adjustment and reducing the force of the push-pull component.

[0006] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0007] In the first aspect, the utility model provides an adjustable lower mold, which is used to form a coating slit for circulating slurry between the lower mold and the middle mold, and an adjustment groove is provided on the lower mold, the adjustment groove is connected with the coating slit, and an adjustment cavity is provided at the bottom of the adjustment groove;

[0008] The lower die also includes:

[0009] The adjusting assembly comprises an adjusting seat, the adjusting seat is arranged in the adjusting cavity and slides in the adjusting cavity, an oblique groove is provided on the adjusting seat, and an adjusting wheel is arranged in the oblique groove to drive the adjusting seat to slide;

[0010] A push-pull assembly connected to the adjusting wheel and used to drive the adjusting wheel to reciprocate; and

[0011] The baffle assembly is sealed and connected to the lower mold. The baffle assembly includes a baffle block. The baffle block is arranged on one side of the adjustment seat. The adjustment assembly drives the baffle block to enter or leave the adjustment groove.

[0012] In some embodiments, the regulating cavity includes a flow-blocking cavity and a placement cavity, wherein the regulating assembly and the push-pull assembly are disposed in the placement cavity, and the flow-blocking assembly is disposed in the flow-blocking cavity.

[0013] In some embodiments, the push-pull assembly includes a connecting rod rotatably connected to the adjusting wheel, the connecting rod being located in the placement cavity; and a differential bolt threadedly connected to the connecting rod and threadedly connected to the lower mold in the placement cavity.

[0014] In some embodiments, a limiting member for limiting the shaking of the adjustment seat is provided on one side of the connecting rod away from the differential bolt.

[0015] In some embodiments, the limit member includes a limit seat, which is disposed in the placement cavity and connected to the lower mold; one end of the connecting rod away from the differential bolt passes through the limit seat and is movably connected to the limit seat.

[0016] In some embodiments, a plurality of the regulating cavities are provided, and the plurality of the regulating cavities are distributed at intervals.

[0017] In some embodiments, the flow-blocking assembly includes a connecting rod, which is disposed between the flow-blocking block and the adjustment seat and is detachably connected to the adjustment seat. A sealing member is disposed between the connecting rod and a cavity wall of the adjustment cavity.

[0018] In some embodiments, a sealing groove is formed on an outer wall of the linkage rod, and the sealing member comprises a sealing ring disposed in the sealing groove.

[0019] In some embodiments, a pin is provided between the connecting rod and the adjusting seat.

[0020] In a second aspect, a coating die head of the utility model is characterized in that it comprises an upper die, a middle die and a lower die, wherein the lower die is the adjustable lower die described above.

[0021] In summary, the utility model has at least the following benefits:

[0022] The utility model provides an adjustable lower die and a coating die head thereof. When adjusting the coating thickness, the push-pull rod can drive the adjusting wheel to reciprocate. The adjusting wheel pushes and presses the oblique groove of the adjusting seat during the reciprocating motion, so that the adjusting seat can slide along the adjusting cavity, and the adjusting seat drives the flow-blocking component to slide to enter or leave the adjusting groove. The adjusting groove is connected to the coating slit to circulate the coating slurry. When the flow-blocking block enters the adjusting groove, it can form a certain degree of blockage in the coating slit, and the blocking amount is reduced after the flow-blocking block leaves the adjusting groove. The adjusting wheel rolls and adjusts in the oblique groove, which can reduce the force of the coating die head to adjust the thickness. The flow-blocking component is smoothly adjusted, which is conducive to the control of the coating thickness adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a front view of a coating die head according to a specific embodiment of the utility model.

[0024] Figure 2 It is a schematic cross-sectional view of the overall structure A and surface A of a coating die head according to a specific embodiment of the utility model.

[0025] Figure 3 for Figure 2 Enlarged schematic diagram of part A.

[0026] Figure 4 It is a structural schematic diagram of the lower mold of a specific embodiment of the utility model.

[0027] Figure 5 It is a schematic structural diagram of an adjusting component, a push-pull component and a flow-blocking component of a specific embodiment of the utility model.

[0028] Figure 6 The present invention is a schematic structural diagram of a coating die head according to a specific embodiment of the present invention.

[0029] Markings in the figure:

[0030] 1. Lower die; 11. Adjustment groove; 12. Adjustment cavity; 121. Placement cavity; 122. Flow blocking cavity; 13. Lower lip;

[0031] 2. Middle die; 21. Coating slit;

[0032] 3. Adjustment assembly; 31. Adjustment seat; 311. Oblique groove; 32. Adjustment wheel;

[0033] 4. Push-pull assembly; 41. Connecting rod; 42. Differential bolt;

[0034] 5. choke assembly; 51. choke block; 52. connecting rod; 521. sealing groove; 53. sealing element; 54. pin;

[0035] 6. Limit seat;

[0036] 8. Upper mold. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1:

[0040] Please see attached Figures 1 to 4 The utility model discloses an adjustable lower mold, comprising a lower mold 1, wherein a coating slit 21 for circulating coating slurry is formed between a middle mold 2 and the lower mold 1.

[0041] The lower die 1 includes a lower lip 13, and an adjustment groove 11 is provided on one side of the lower die 1 close to the coating slit 21. The adjustment groove 11 is located on one side of the lower lip 13. Specifically, the adjustment groove 11 is a long strip groove, and the adjustment groove 11 is connected to the coating slit 21 to circulate the coating slurry. An adjustment cavity 12 is provided at the bottom of the adjustment groove 11. In a preferred embodiment, the adjustment cavity 12 includes a flow blocking cavity 122 located at the top and a placement cavity 121 located at the bottom, and the flow blocking cavity 122 is connected to the coating slit 21. Specifically, the flow blocking cavity 122 is vertically arranged, and the placement cavity 121 is horizontally arranged.

[0042] The lower mold 1 is provided with an adjustment assembly 3 in the placement cavity 121, and the adjustment assembly 3 includes an adjustment seat 31, and a slanted groove 311 is opened on one side of the adjustment seat 31, and the slanted groove 311 is specifically arranged horizontally. The adjustment seat 31 is provided with an adjustment wheel 32 in the slanted groove 311, and the adjustment wheel 32 rolls in the slanted groove 311.

[0043] The adjusting wheel 32 is provided with a push-pull assembly 4 for driving the adjusting wheel 32 to reciprocate in the horizontal direction, and the push-pull assembly 4 is located in the placement cavity 121. The adjusting seat 31 is provided with a flow blocking assembly 5 for adjusting the blocking amount of the coating slurry in the adjusting groove 11, and the flow blocking assembly 5 is sealed and connected to the lower mold 1, so that the coating slurry is difficult to penetrate into the flow blocking cavity 122 through the flow blocking assembly 5. The flow blocking assembly 5 includes a flow blocking block 51, which is specifically cylindrical, and the flow blocking block 51 is located in the flow blocking cavity 122 and can be lifted and lowered along the flow blocking cavity 122.

[0044] During the coating thickness adjustment process, the push-pull assembly 4 drives the adjusting wheel 32 to move in the horizontal direction. At this time, the adjusting wheel 32 rolls in the oblique groove 311 and presses the inner wall of the oblique groove 311 to make the adjusting seat 31 rise and fall in the placement cavity 121, and then the adjusting seat 31 drives the flow blocking assembly 5 to rise and fall in the flow blocking cavity 122. When the flow blocking block 51 enters the adjustment groove 11, the flow blocking block 51 can form a certain degree of blocking for the flow of the coating slurry in the adjustment groove 11, and the flow volume of the coating slurry flowing along the coating slit 21 to the lower lip 13 is reduced, that is, the thickness of the coating is reduced; and when the flow blocking block 51 leaves the adjustment groove 11, the blocking amount of the coating slurry by the flow blocking block 51 is reduced, and the flow volume of the coating slurry flowing along the coating slit 21 to the lower lip 13 is increased, and the thickness of the coating is increased. The reciprocating rolling of the adjusting wheel 32 drives the adjusting seat 31 and the baffle assembly 5 to rise and fall. The friction between the adjusting wheel 32 and the adjusting seat 31 is relatively small, which is beneficial to improving the smoothness and accuracy of the coating thickness adjustment process. Compared with the traditional deformation groove deformation adjustment process, it can reduce the force at the push-pull assembly 4 and reduce the possibility of breakage of the push-pull assembly 4, making the coating thickness control process more labor-saving.

[0045] At the same time, the push-pull assembly 4 drives the adjustment wheel 32 to roll in the oblique groove 311, and the adjustment seat 31 drives the flow block 51 to enter or leave the adjustment groove 11, which is conducive to more efficient and accurate control of the interception amount, improves the problem of uneven thickness of the coating layer caused by excessive adjustment during the coating thickness control process, and reduces the permanent deformation of the lower lip 13 due to improper adjustment, resulting in poor coating effect or coating leakage. In addition, the setting of the adjustment assembly 3 expands the adjustment range of the coating thickness, which can meet the diverse coating process requirements.

[0046] Embodiment 2:

[0047] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the flow blocking component 5 and the push-pull component 4 of the utility model, see Figure 2 and Figures 4 to 6 .

[0048] See also Figure 2 The flow blocking assembly 5 of this embodiment also includes a connecting rod 52, which is specifically a long rod arranged vertically. The connecting rod 52 is arranged between the flow blocking block 51 and the adjustment seat 31, wherein one end of the connecting rod 52 along the length direction is fixedly connected to the flow blocking block 51, and the other end is detachably connected to the connecting rod 52. In a preferred embodiment, a pin 54 is arranged between the connecting rod 52 and the limit seat 6, and the pin 54 connects the connecting rod 52 and the limit seat 6 to ensure the stability of the connection. The connecting rod 41 is located in the flow blocking cavity 122. Specifically, the outer wall of the connecting rod 41 is slidably connected to the inner wall of the flow blocking cavity 122, and the flow blocking cavity 122 plays a certain limiting role in the sliding of the connecting rod 41. When the adjustment seat 31 is lifted and lowered, the connecting rod 52 is driven to lift and lower in the flow blocking cavity 122, and the connecting rod 52 further drives the flow blocking block 51 to enter or move away from the adjustment groove 11.

[0049] In a preferred embodiment, a sealing groove 521 is provided on the outer wall of the linkage rod 52. Specifically, the sealing groove 521 is an annular groove. The linkage rod 52 is provided with a sealing member 53 in the sealing groove 521 to achieve a sealed connection between the linkage rod 52 and the lower mold 1. Further, the sealing member 53 includes a sealing ring, which is interference-fitted with the lower mold 1 in the choke cavity 122. In some specific embodiments, the sealing ring can be a rubber sealing ring. It can be understood that this is not a specific limitation on the sealing ring, and technicians in the relevant field can replace it, such as a plastic sealing ring, a metal sealing ring, etc.

[0050] The push-pull assembly 4 includes a connecting rod 41, which is specifically arranged horizontally. The connecting rod 41 includes a push-pull end and a threaded end. The connecting rod 41 is rotatably connected to the adjusting wheel 32 at the push-pull end, and the threaded end of the connecting rod 41 is adapted to the placement cavity 121. When the connecting rod 41 is pushed and pulled, the connecting rod 41 can drive the adjusting wheel 32 to reciprocate in the horizontal direction, and then roll in the oblique groove 311.

[0051] The connecting rod 41 is threadedly connected with a differential bolt 42 at the threaded end, and the outer wall of the differential bolt 42 is slidably connected to the inner wall of the placement cavity 121, and the thread of the differential bolt 42 is threadedly connected to the inner wall of the placement cavity 121. By rotating the differential bolt 42, the differential bolt 42 drives the connecting rod 41 to reciprocate in the horizontal direction, and at this time, the connecting rod 41 drives the adjusting wheel 32 to adjust the position of the adjusting seat 31.

[0052] In some preferred embodiments, one end of the connecting rod 41 away from the differential bolt 42 is slidably connected to a limiting member, and the limiting member includes a limiting seat 6, which is specifically a rectangular block. The limiting seat 6 is detachably connected to the lower mold 1. Specifically, the limiting seat 6 and the lower mold 1 are preferably but not limited to being assembled by bolts. The end of the connecting rod 41 close to the limiting seat 6 passes through the limiting seat 6 and is slidably connected to the limiting seat 6. The limiting seat 6 can limit the shaking of the connecting rod 41 and play a certain stabilizing role.

[0053] When adjusting the coating thickness, the differential bolt 42 is rotated, and the differential bolt 42 drives the connecting rod 41 to slide toward the limit seat 6, and then the connecting rod 41 drives the adjusting wheel 32 to roll toward the limit seat 6. During the rolling process of the adjusting wheel 32 in the horizontal direction, it can press the inner wall of the inclined groove 311 to drive the adjusting seat 31 to move up and down. The adjusting seat 31 drives the flow block 51 to enter or leave the adjusting groove 11 through the connecting rod 52, and adjusts the blocking amount of the coating slurry. By rotating the differential bolt 42, the coating thickness adjustment process is easy to control, which is conducive to controlling the adjustment amount of the coating thickness, so as to reduce the phenomenon of uneven coating thickness due to excessive or too small adjustment amount.

[0054] In some preferred embodiments, a plurality of adjustment cavities 12 are provided, and the plurality of adjustment cavities 12 are distributed along the length direction of the adjustment groove 11. At this time, it is beneficial to ensure the lateral consistency of the thickness of the coating and reduce the impact of the lateral inconsistency of the thickness of the coating on the quality of the pole piece product.

[0055] Embodiment 3:

[0056] Based on the above embodiments, this embodiment provides a coating die head, including an upper die 8, a middle die 2 and a lower die 1 stacked in sequence. The coating die head adopts a three-layer structure, which is beneficial to improving the coating accuracy and adjustability of the coating die head and achieving coating consistency and stability.

[0057] The lower die 1 is the above-mentioned adjustable lower die. Specifically, a coating slit 21 can be formed between the middle die 2 and the lower die 1 through a gasket.

[0058] The utility model provides a coating die head, which improves the smoothness of coating thickness adjustment by adopting the above-mentioned coating die head, can better control the adjustment amount of coating thickness, expands the range of coating thickness adjustment, and has good adaptability of the coating die head.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0061] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0062] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0063] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. An adjustable lower die, used to form a coating slit (21) for flowing slurry between the lower die and the middle die (2), characterized in that: The lower die (1) is provided with an adjustment groove (11), the adjustment groove (11) is connected to the coating slit (21), and an adjustment cavity (12) is provided at the bottom of the adjustment groove (11); The lower mold (1) also includes: An adjustment assembly (3), comprising an adjustment seat (31), the adjustment seat (31) being arranged in the adjustment cavity (12) and sliding in the adjustment cavity (12), the adjustment seat (31) being provided with an oblique groove (311), and an adjustment wheel (32) being arranged in the oblique groove (311) for driving the adjustment seat (31) to slide; A push-pull assembly (4) connected to the adjusting wheel (32) and used to drive the adjusting wheel (32) to reciprocate; as well as A flow-blocking assembly (5) is sealed and connected to the lower mold (1). The flow-blocking assembly (5) comprises a flow-blocking block (51). The flow-blocking block (51) is arranged on one side of the adjustment seat (31). The adjustment assembly (3) drives the flow-blocking block (51) to enter or leave the adjustment groove (11).

2. The adjustable lower die according to claim 1, characterized in that: The regulating chamber (12) comprises a flow-blocking chamber (122) and a placement chamber (121), wherein the regulating component (3) and the push-pull component (4) are arranged in the placement chamber (121), and the flow-blocking component (5) is arranged in the flow-blocking chamber (122).

3. The adjustable lower die according to claim 2, characterized in that: The push-pull assembly (4) comprises: a connecting rod (41) rotatably connected to the adjusting wheel (32), wherein the connecting rod (41) is located in the placement cavity (121); and The differential bolt (42) is threadedly connected to the connecting rod (41) and is threadedly connected to the lower mold (1) in the placement cavity (121).

4. The adjustable lower die according to claim 3, characterized in that: A limiting member for limiting the shaking of the adjustment seat (31) is provided on one side of the connecting rod (41) away from the differential bolt (42).

5. The adjustable lower die according to claim 4, characterized in that: The limiting member comprises a limiting seat (6), wherein the limiting seat (6) is arranged in the placement cavity (121) and connected to the lower mold (1); One end of the connecting rod (41) away from the differential bolt (42) passes through the limiting seat (6) and is movably connected to the limiting seat (6).

6. The adjustable lower die according to claim 1, characterized in that: A plurality of the regulating chambers (12) are provided, and the plurality of the regulating chambers (12) are distributed at intervals.

7. The adjustable lower die according to claim 1, characterized in that: The flow-blocking assembly (5) comprises a connecting rod (52) which is arranged between the flow-blocking block (51) and the adjusting seat (31) and is detachably connected to the adjusting seat (31); a sealing member (53) is arranged between the connecting rod (52) and the cavity wall of the adjusting cavity (12).

8. The adjustable lower die according to claim 7, characterized in that: The outer wall of the linkage rod (52) is provided with a sealing groove (521), and the sealing member (53) comprises a sealing ring, which is arranged in the sealing groove (521).

9. The adjustable lower die according to claim 7, characterized in that: A pin (54) is provided between the linkage rod (52) and the adjustment seat (31).

10. A coating die head, characterized in that: It comprises an upper die (8), a middle die (2) and a lower die (1), wherein the lower die (1) is an adjustable lower die as claimed in any one of claims 1 to 9.

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