CN220239104U - Adjusting block, adjusting mechanism and coating die head - Google Patents

Abstract

The utility model discloses an adjusting block, an adjusting mechanism and a coating die head, and relates to the technical field of coating devices. The adjusting block comprises a rod body, a closure block and an elastic extrusion piece; the rod body is provided with a first end and a second end which are opposite, and the first end of the rod body is suitable for being connected with the execution device; the intercepting block and the rod body are integrally formed or fixed at the second end of the rod body; the elastic extrusion piece is arranged on the bottom surface of the interception block, the elastic extrusion piece comprises an elastic body and a deformation part, the deformation part is bent towards the direction close to the rod body, the elastic body is suitable for being accommodated in the gasket, and the deformation part is suitable for being arranged corresponding to the coating edge so as to form an interception surface of the coating edge. The utility model provides the regulating block, which not only can control the thickness of the coating edge by regulating the extrusion degree, but also can jointly regulate the thickness of the coating edge by supplementing materials and matching with the extrusion form, thereby effectively improving the coating consistency; in addition, the feed structure can also be used to apply a second coating to meet different production requirements.

Description

Adjusting block, adjusting mechanism and coating die head

Technical Field

The utility model relates to the technical field of coating devices, in particular to an adjusting block, an adjusting mechanism and a coating die head.

Background

Slot die coating is an advanced pre-metering coating technique in which the fluid fed to the coating die forms a coating on the substrate in its entirety. Therefore, the surface density of the wet coating can be precisely controlled by changing the feeding speed and the coating speed of the slurry. The coating process is that slurry with certain flow enters the die cavity in the die head from the feed opening of the extrusion die head, stable pressure is formed, the slurry is extruded at the outlet of the slit of the die head, the slurry is coated on the foil, and the coating is dried through the oven.

During the coating process, half-moon shaped features tend to form on both side edges due to the slurry fluid properties. In the coating process, the appearance of thickness sudden increase at the edge of the pole piece is called a 'bulging edge' phenomenon. This "beading" phenomenon is undesirable and can create problems with the battery's process and battery performance and consistency.

In the prior art, as shown in fig. 1, the thickness of the coating is generally adjusted by an adjusting mechanism, wherein the adjusting mechanism comprises a differential head, a coupler, a T block 101 and the like, and the T block 101 extends into a slit of a die head and is driven by the differential head to adjust the areal density. However, the cross-sectional surface of T-block 101 is a flat surface, and when T-block 101 adjusts the thickness of coating edge 102, the influence is exerted on the inner region where adjustment is not required. If the coating edge is turned up, the T block 101 is pressed down, the coating edge 102 becomes thinner, but the thickness of the inner area becomes thinner, forming a recess; similarly, if the coating edge 102 is thin, if the T-piece 101 is lifted up, the thickness of the coating edge 102 becomes thicker, and the thickness of the inner region becomes thicker, forming a bulge. Thus, no effective adjustment is made, and the "drumming" phenomenon is difficult to solve.

Disclosure of Invention

The utility model mainly aims to provide an adjusting block, an adjusting mechanism and a coating die head, which aim to realize adjustment of the thickness of a coating edge so as to effectively solve the phenomenon of 'edge bulging'.

To achieve the above object, the present utility model proposes an adjusting block comprising:

the rod body is provided with a first end and a second end which are opposite, and the first end of the rod body is suitable for being connected with an executing device of the coating die head;

the interception block and the rod body are integrally formed or fixed at the second end of the rod body; and

the elastic extrusion piece is arranged on the bottom surface of the intercepting block and comprises an elastic body and a deformation part connected with the elastic body, the deformation part is bent and arranged towards the direction close to the rod body, the elastic body is suitable for being accommodated in a gasket of the coating die head, and the deformation part is suitable for being arranged corresponding to the coating edge and forming an intercepting surface of the coating edge.

Optionally, an inclined plane or an arc surface is arranged on one side of the bottom surface of the intercepting block, the extending direction of the inclined plane or the arc surface is consistent with the bending direction of the deformation part, and the deformation part is attached to the inclined plane or the arc surface.

Optionally, the body of rod is equipped with the feed supplement passageway, the feed end of feed supplement passageway is suitable for and mends the feed arrangement intercommunication, the shutoff piece be equipped with the runner of feed supplement passageway's discharge end intercommunication and with the feed supplement mouth of runner intercommunication, the feed supplement mouth is suitable for corresponding coating edge setting.

Optionally, the feed supplement port is located outside the deformation portion.

Optionally, the elastic body is flatly attached to the bottom surface of the intercepting block, and the plane where the feeding port is located is parallel to the plane where the elastic body is located.

To achieve the above object, the present utility model provides an adjusting mechanism, comprising:

the adjusting block is the adjusting block;

the fixing seat is suitable for being fixed on the coating die;

the execution device is arranged on the fixed seat; and

one end of the coupler is connected with the output end of the execution device, and the regulating block is connected with the other end of the coupler;

the adjusting block comprises: the rod body is provided with a first end and a second end which are opposite, and the first end of the rod body is suitable for being connected with an executing device of the coating die head; the interception block and the rod body are integrally formed or fixed at the second end of the rod body; and the elastic extrusion piece is arranged on the bottom surface of the intercepting block and comprises an elastic body and a deformation part connected with the elastic body, the deformation part is bent towards the direction close to the rod body, the elastic body is suitable for being accommodated in a gasket of the coating die head, and the deformation part is suitable for being arranged corresponding to the coating edge and forms the intercepting surface of the coating edge.

Optionally, the body of rod of regulating block is equipped with the feed supplement passageway, the shutoff piece of regulating block be equipped with the runner of feed supplement passageway's discharge end intercommunication and with the feed supplement mouth of runner intercommunication, adjustment mechanism is still including the adaptor that is equipped with the interface, the adaptor is located on the feed end of body of rod, the interface is suitable for through pipeline and feed supplement valve intercommunication.

Optionally, the actuator is a differential head or a linear motor.

To achieve the above object, the present utility model also provides a coating die comprising:

the two adjusting mechanisms positioned at the coating edge are the adjusting mechanisms;

the device comprises a first die body, a second die body and a first die body, wherein the first die body is provided with at least one avoidance hole; and

the second die body is fixedly connected with the first die body, a gasket is clamped between the first die body and the second die body, and a coating slit communicated with the avoidance hole is formed in a surrounding mode; the adjusting mechanism is arranged on the first die body and extends into the coating slit through the avoiding hole.

Optionally, the gasket is provided with a containing groove for containing the elastic extrusion of the adjusting mechanism.

In the technical scheme of the utility model, the adjusting block comprises a rod body, a shutoff block and an elastic extrusion piece; the rod body is provided with a first end and a second end which are opposite, and the first end of the rod body is suitable for being connected with an executing device of the coating die head; the intercepting block and the rod body are integrally formed or fixed at the second end of the rod body; the elastic extrusion piece is arranged on the bottom surface of the interception block, the elastic extrusion piece comprises an elastic body and a deformation part connected with the elastic body, the deformation part is bent and arranged towards the direction close to the rod body, the elastic body is suitable for being accommodated in a gasket of the coating die head, and the deformation part is suitable for being arranged corresponding to the coating edge and forming an interception surface of the coating edge. It will be appreciated that during the coating process, the adjusting block moves downwards under the action of the actuator such as the micro-head, and the elastic extrusion at the bottom of the adjusting block presses down with its elastic body into the body of the gasket, and the deformation portion inclining upwards is gradually pressed, continuing to press down the edge of the wet coating, during which the pressing down of the adjusting mechanism corresponding to the inner side of the wet coating is stopped, and the thickness of the coated edge is thinned to be the same as the thickness of the inner side of the coating. Therefore, the thickness of the coating edge is adjusted, and the phenomenon of 'edge bulging' is effectively solved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a diagram of a prior art "drumming" phenomenon analysis;

FIG. 2 is a schematic diagram of an embodiment of a regulating block according to the present utility model;

FIG. 3 is a schematic diagram of a coated edge thickness adjustment according to one embodiment of the adjustment block of the present utility model;

FIG. 4 is a schematic view of an embodiment of an adjusting mechanism according to the present utility model;

FIG. 5 is a schematic view of a rotating member in an embodiment of an adjusting mechanism according to the present utility model;

FIG. 6 is a schematic view of an embodiment of a coating die of the present utility model;

fig. 7 is an exploded view of one embodiment of a coating die of the present utility model.

Reference numerals illustrate:

101. a T block; 102. coating the edges; 10. an adjusting mechanism; 20. a first die body; 30. a second die body; 40. a gasket; 20a, coating slits; 100. an adjusting block; 200. a fixing seat; 300. an actuator; 400. a coupling; 500. an adapter; 500a, an adapter; 50. a feed supplement valve; 110. a rod body; 120. a shutoff block; 130. an elastic extrusion; 131. an elastic body; 132. a deformation section; 120a, a feed supplement port.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B meet at the same time. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

In one exemplary technique, as shown in FIG. 1, the coating thickness is typically adjusted by an adjustment mechanism that includes a differential head, a coupler, a T-block 101, etc., the T-block 101 extending into the die slot and being driven by the differential head to adjust the areal density. However, the cross-sectional surface of T-block 101 is a flat surface, and when T-block 101 adjusts the thickness of coating edge 102, the influence is exerted on the inner region where adjustment is not required. If the coating edge is turned up, the T block 101 is pressed down, the coating edge 102 becomes thinner, but the thickness of the inner area becomes thinner, forming a recess; similarly, if the coating edge 102 is thin, if the T-piece 101 is lifted up, the thickness of the coating edge 102 becomes thicker, and the thickness of the inner region becomes thicker, forming a bulge. Thus, no effective adjustment is made, and the "drumming" phenomenon is difficult to solve.

In this respect, the utility model proposes a regulating block which can be applied to a coating die, in particular a high-temperature slurry coating device, without limitation.

Referring to fig. 2 and 7, in an embodiment of the present utility model, the adjusting block 100 includes a rod 110, a shut-off block 120, and an elastic pressing member 130; the rod 110 has a first end and a second end opposite to each other, and the first end of the rod 110 is adapted to be connected to the actuator 300 of the coating die; the intercepting block 120 is integrally formed with the rod body 110 or is fixed at the second end of the rod body 110; the elastic extrusion 130 is disposed on the bottom surface of the interception block 120, the elastic extrusion 130 includes an elastic body 131 and a deformation portion 132 connected with the elastic body 131, the deformation portion 132 is bent towards the direction approaching to the rod body 110, the elastic body 131 is suitable for being accommodated in the gasket 40 of the coating die head, and the deformation portion 132 is suitable for being disposed corresponding to the coating edge 102 and forming an interception surface of the coating edge 102.

In this embodiment, the rod 110 and the interception block 120 may be made of corrosion-resistant metal or plastic, which is not limited herein.

The rod 110 may have a cylindrical shape, a square column shape, or the like, and may have a solid structure or a hollow structure, which is not limited herein. The intercepting block 120 may be rectangular, etc., and the two blocks are connected to form a T-shaped block.

The elastic pressing member 130 may be made of flexible material such as silica gel, and is not limited herein.

It should be noted that, after the elastic body 131 is pressed down, the elastic body 131 is accommodated in the gasket 40 of the coating die, that is, the elastic body 131 is a non-cross-sectional surface, the slurry is not extruded, and the gasket 40 may mill an accommodating groove so that the elastic body 131 is accommodated in the accommodating groove of the gasket 40. The adjusting blocks 100 are disposed at the coating edge 102, that is, in general, two groups of the adjusting blocks 100 are required to be disposed on the coating die to correspond to the two side edges of the wet coating, and the T-block 101 of the adjusting mechanism 10 disposed at the inner side of the coating may be of a conventional structure.

It will be appreciated that during the coating process, the adjusting block 100 moves downward under the action of the actuator 300 such as a micro head, and the elastic pressing member 130 at the bottom of the adjusting block 100 presses down, the elastic body 131 thereof is pressed into the body accommodating groove of the gasket 40, the deformation portion 132 inclined upward is gradually pressed, the edge "drum edge" of the wet coating is continuously pressed down, during which the conventional adjusting mechanism 10 corresponding to the inside of the wet coating stops pressing down, and the thickness of the coating edge 102 is thinned to be the same as the thickness of the inside of the coating. Thus, the thickness of the coating edge 102 is adjusted, and the phenomenon of 'edge bulging' is effectively solved.

In order to further improve the consistency of the thickness of the coating edge 102 and the thickness of the coating inner side, in an embodiment, referring to fig. 2 and 3, a bottom surface side of the intercepting block 120 may be provided with an inclined surface or an arc surface, and an extending direction of the inclined surface or the arc surface is consistent with a bending direction of the deforming portion 132, where the deforming portion 132 is attached to the inclined surface or the arc surface. This allows the deformed portion 132 to better conform to the cut-off block 120 to further enhance the "bead" effect of flattening the wet coating edge and to increase the range of adjustment of the coating edge thickness.

As shown in fig. 3, the right side view shows the adjusting block 100 in a natural state, the height between the lower surface of the adjusting block 100 of the coating edge 102 and the working surface is h0, and the width through which the slurry flows is w0; the left side view shows the block 100 in a compressed state, the height of the lower surface of the block 100 of the coating edge 102 from the working surface is h1, and the width through which the slurry flows is w1. It is evident that h1 is less than h0. Thus, by controlling the conditioning block 100 to press down on the edge of the wet coating, the thickness of the coated edge 102 can be varied. In addition, as can be seen from the figure, w1 is smaller than w0, i.e., as the conditioning block 100 is compressed, the width through which the slurry flows is also reduced. Therefore, by reasonably setting the size of the inclined surface or the cambered surface, the adjusting range of the thickness of the coating edge can be effectively enlarged.

Referring mainly to fig. 2, in an embodiment, the rod 110 may be provided with a feeding channel, the rod 110 is of a hollow structure, a feeding end of the feeding channel is adapted to be communicated with the feeding valve 50 of the feeding device, the shut-off block 120 is provided with a flow channel communicated with a discharging end of the feeding channel and a feeding port 120a communicated with the flow channel, and the feeding port 120a is adapted to be disposed corresponding to the coating edge 102.

In the present embodiment, the feed port 120a is located outside the deformation portion 132 so that the replenished paste can smoothly flow to the thin edge of the coating edge 102.

To further improve the uniformity of coating, in this embodiment, the elastic body 131 may be flatly attached to the bottom surface of the shut-off block 120, and the plane of the feeding port 120a is parallel to the plane of the elastic body 131.

It can be understood that the present utility model implements slurry replenishment on the coating edge 102 by providing a replenishment channel in the rod 110, connecting the feeding end of the replenishment channel to the replenishment valve 50 of the replenishment device, and providing a flow channel connected to the discharging end of the replenishment channel and a replenishment port 120a connected to the flow channel in the shutoff block 120, so as to solve the problem of thin edges of the coating edge 102. In addition, the material feeding structure can be used for coating a second coating, such as insulating glue, so as to coat an insulating layer on the edge of the slurry, thereby meeting different production requirements.

In one aspect, the present utility model provides for varying degrees of extrusion by providing the elastomeric extrusion 130 and varying the height position of the elastomeric extrusion 130 to provide for a good control of the thickness of the coated edge 102.

On the other hand, the thickness of the coating edge 102 is adjusted together in a form of feeding and extrusion matching by arranging the adjusting block 100 for hollow feeding, so that the coating consistency is effectively improved.

The present utility model also proposes an adjusting mechanism 10, and the adjusting mechanism 10 can be applied to a double-layer coating die, a triple-layer coating die, or a multi-layer coating die, which is not limited herein.

Referring to fig. 4, in an embodiment of the present utility model, the adjusting mechanism 10 includes an adjusting block 100, a fixing base 200, an actuator 300, and a coupling 400; the fixing base 200 is suitable for being fixed on a coating die; the execution device 300 is arranged on the fixed seat 200; one end of the coupling 400 is connected with the output end of the actuator 300; the adjusting block 100 is connected to the other end of the coupling 400, and the adjusting block 100 is the adjusting block 100 described above.

In this embodiment, the actuator 300 may be configured as a manually-adjusted differential head, an automatically-adjusted linear motor, or the like. When the differential head is used as the actuator 300, the adjustment end of the differential head may be connected to the upper end of the rod 110 of the adjustment block 100 through the coupling 400. When the linear motor is adopted as the executing device 300, a displacement sensor and a driving plate can be arranged, the linear motor and the displacement sensor are respectively connected with the driving plate, the linear motor can drive the regulating block 100 to move through the coupling 400, the displacement sensor detects the regulating quantity of the regulating block 100, and the driving plate controls the linear motor to work according to a displacement signal output by the displacement sensor.

It should be noted that, since the adjusting mechanism 10 according to the present utility model includes all the solutions of all the embodiments of the adjusting block 100, at least the technical effects similar to those of the adjusting block 100 are not described herein.

Referring to fig. 2, 4 and 5, in an embodiment, when the adjusting block 100 is of a hollow structure, i.e. the rod 110 of the adjusting block 100 is provided with a feeding channel, the intercepting block 120 of the adjusting block 100 is provided with a flow channel communicating with a discharging end of the feeding channel and a feeding port 120a communicating with the flow channel. In this case, the adjusting mechanism 10 may further include an adaptor 500 provided with an adaptor port 500a, the adaptor 500 being provided on the feeding end of the rod 110, the adaptor port 500a being adapted to communicate with the feeding valve 50 through a pipe. Therefore, the convenience of compensating the sizing agent can be improved, and the assembly is more convenient. In addition, it is also possible to apply a paint such as an insulating paste to the edges of the wet coating.

The utility model also provides a coating die head.

Referring to fig. 6 and 7, in one embodiment of the present utility model, the coating die comprises an adjustment mechanism 10, a first die body 20, and a second die body 30; the two adjusting mechanisms 10 located at the coating edge 102 are the adjusting mechanisms 10 described above; the first die body 20 is provided with avoidance holes at positions corresponding to the coating edges 102; the second die body 30 is fixedly connected with the first die body 20, a gasket 40 is clamped between the first die body 20 and the second die body 30, and a coating slit 20a communicated with the avoidance hole is formed in a surrounding mode; the adjusting mechanism 10 is provided on the first die body 20 and extends into the coating slit 20a through the relief hole.

In this embodiment, two sets of adjusting blocks 100 having elastic pressing members 130 are required to be disposed on the coating die to correspond to the two side edges of the wet coating respectively, and the T blocks 101 of the plurality of adjusting mechanisms 10 located at the inner side of the coating can be of a conventional structure.

In this embodiment, the spacer 40 may be provided with a receiving groove for receiving the elastic extrusion 130 of the adjusting mechanism 10, so that the elastic body 131 of the elastic extrusion 130 is received in the receiving groove during the pressing process, and the deformed portion 132 thereof can further press the "bead" at the coating edge 102 until flattening it. By this means, the consistency of the thickness of the coated edge with the thickness of the coated inner side is further improved.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. An adjustment block (100), characterized by comprising:

a rod (110) having opposite first and second ends, the first end of the rod (110) being adapted to be coupled to an actuator (300) of a coating die;

a shut-off block (120), the shut-off block (120) being integrally formed with the rod body (110) or being fixed to a second end of the rod body (110); and

the elastic extrusion piece (130) is arranged on the bottom surface of the intercepting block (120), the elastic extrusion piece (130) comprises an elastic body (131) and a deformation part (132) connected with the elastic body (131), the deformation part (132) is bent towards the direction close to the rod body (110), the elastic body (131) is suitable for being accommodated in a gasket (40) of the coating die head, and the deformation part (132) is suitable for being arranged corresponding to the coating edge (102) and forms the intercepting surface of the coating edge.

2. The adjusting block (100) according to claim 1, wherein an inclined surface or an arc surface is provided on one side of the bottom surface of the intercepting block (120), the extending direction of the inclined surface or the arc surface is consistent with the bending direction of the deforming portion (132), and the deforming portion (132) is attached to the inclined surface or the arc surface.

3. The regulating block (100) according to claim 1, wherein the rod body (110) is provided with a feed channel, the feed end of the feed channel being adapted to communicate with a feed device, the shut-off block (120) is provided with a flow channel communicating with the discharge end of the feed channel and a feed opening (120 a) communicating with the flow channel, the feed opening (120 a) being adapted to be arranged in correspondence of the coating edge (102).

4. A regulating block (100) according to claim 3, wherein the feed opening (120 a) is located outside the deformation (132).

5. The regulating block (100) according to claim 4, wherein the elastic body (131) is flush against the bottom surface of the shut-off block (120), and the feeding port (120 a) is located in a plane parallel to the plane in which the elastic body (131) is located.

6. An adjustment mechanism (10), characterized by comprising:

-an adjustment block (100), the adjustment block (100) being an adjustment block (100) according to any one of claims 1 to 5;

a fixing seat (200) which is suitable for being fixed on the coating die;

the execution device (300) is arranged on the fixed seat (200); and

and one end of the coupler (400) is connected with the output end of the execution device (300), and the regulating block (100) is connected with the other end of the coupler (400).

7. The adjusting mechanism (10) according to claim 6, wherein the rod body (110) of the adjusting block (100) is provided with a feeding channel, the intercepting block (120) of the adjusting block (100) is provided with a flow channel communicated with the discharging end of the feeding channel and a feeding port (120 a) communicated with the flow channel, the adjusting mechanism (10) further comprises an adapter piece (500) provided with an adapter port (500 a), the adapter piece (500) is arranged on the feeding end of the rod body (110), and the adapter port (500 a) is suitable for being communicated with the feeding valve (50) through a pipeline.

8. The adjustment mechanism (10) of claim 6, wherein the actuator (300) is a differential head or a linear motor.

9. A coating die, comprising:

-an adjustment mechanism (10), two of said adjustment mechanisms (10) located at the coating edge (102) being adjustment mechanisms (10) according to any one of claims 6 to 8;

the first die body (20) is provided with an avoidance hole at a position corresponding to the coating edge (102) on the first die body (20); and

the second die body (30) is fixedly connected with the first die body (20), a gasket (40) is clamped between the first die body (20) and the second die body (30), and a coating slit (20 a) communicated with the avoidance hole is formed in a surrounding mode; the adjusting mechanism (10) is arranged on the first die body (20) and extends into the coating slit (20 a) through the avoiding hole.

10. The coating die according to claim 9, wherein the shim (40) is provided with a receiving slot for receiving an elastic extrusion (130) of the adjusting mechanism (10).