阅读说明：本技术 一种双层涂布模头及涂布机 (Double-layer coating die head and coating machine ) 是由 彭建林 陈贵山 于 2021-03-23 设计创作，主要内容包括：本发明涉及涂布机配件的技术领域,具体涉及一种双层涂布模头及涂布机。一种双层涂布模头,包括由下而上依次设置的下模、中模及上模,所述下模上设置有第一流体分配腔,所述中模上设置有第二流体分配腔,所述第一流体分配腔呈倾斜设置,所述第二流体分配腔呈水平设置,所述中模上设有与所述第一流体分配腔相连通的第一排空口,所述上模上设有与所述第二流体分配腔相连通的第二排空口。此种结构在安装涂布模头时,由于第二流体分配腔呈水平设置,第二排空口还是会处于第二流体分配腔的最高点,有利于第一流体分配腔和第二流体分配腔的排空,较好的实现了间歇涂布。(The invention relates to the technical field of coating machine accessories, in particular to a double-layer coating die head and a coating machine. The double-layer coating die head comprises a lower die, a middle die and an upper die which are sequentially arranged from bottom to top, wherein a first fluid distribution cavity is formed in the lower die, a second fluid distribution cavity is formed in the middle die, the first fluid distribution cavity is obliquely arranged, the second fluid distribution cavity is horizontally arranged, a first emptying port communicated with the first fluid distribution cavity is formed in the middle die, and a second emptying port communicated with the second fluid distribution cavity is formed in the upper die. When the coating die head is installed, the second fluid distribution cavity is horizontally arranged, and the second emptying port is still positioned at the highest point of the second fluid distribution cavity, so that emptying of the first fluid distribution cavity and the second fluid distribution cavity is facilitated, and intermittent coating is well realized.)

1. A dual layer coating die characterized by: including lower mould (1), well mould (2) and last mould (3) that set gradually from bottom to top, be provided with first fluid distribution chamber (11) on lower mould (1), be provided with second fluid distribution chamber (21) on well mould (2), first fluid distribution chamber (11) are the slope setting, second fluid distribution chamber (21) are the level setting, be equipped with on well mould (2) with first drain hole (22) that first fluid distribution chamber (11) are linked together, be equipped with on last mould (3) with second drain hole (31) that second fluid distribution chamber (21) are linked together.

2. The dual layer coating die of claim 1, wherein: lower mould (1) with press from both sides between well mould (2) and be equipped with first gasket (4), well mould (2) with it is equipped with second gasket (5) to press from both sides between last mould (3), be equipped with on lower mould (1) be used for to first feedstock channel (12) of first fluid distribution chamber (11) feed, be provided with on well mould (2) be used for to second feedstock channel (23) of second fluid distribution chamber (21) feed, be formed with first coating opening (41) that are used for the ejection of compact on first gasket (4), first coating opening (41) with first fluid distribution chamber (11) intercommunication, be formed with second coating opening (51) that are used for the ejection of compact on second gasket (5), second coating opening (51) with second fluid distribution chamber (21) intercommunication.

3. The dual layer coating die of claim 2, wherein: the first coating opening (41) is arranged obliquely, and the second coating opening (51) is arranged horizontally.

4. The dual layer coating die of claim 2, wherein: the glue dispensing device is characterized in that a glue dispensing flow channel is formed in the first gasket (4), and a connecting channel (6) communicated with the glue dispensing flow channel is formed in the upper die (3) and the middle die (2).

5. The dual layer coating die of claim 4, wherein: an opening and closing valve (7) is arranged on the head of the upper die (3), and the opening and closing valve (7) is arranged on the connecting channel (6).

6. The dual layer coating die of claim 4, wherein: one side of the first gasket (4) is provided with a support member (42), and the support member (42) is positioned in the first fluid distribution chamber (11).

7. The dual layer coating die of any one of claims 1-6, wherein: and a push-pull rod adjusting mechanism (8) for adjusting the surface density of the lower coating is arranged on the lower die (1).

8. The dual layer coating die of any one of claims 1-6, wherein: and a differential head adjusting mechanism (9) for adjusting the surface density of the coating is arranged on the upper die (3).

9. A coater, characterized in that: comprising the double layer coating die of any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of coating machine accessories, in particular to a double-layer coating die head and a coating machine.

Background

In industrial production, there are many occasions where a double coating layer needs to be applied, for example, in the battery production industry, in order to enhance the safety performance of a battery, a functional coating is generally applied on the surface or the bottom surface of an active material layer of a current collector.

Referring to fig. 1, there is a double-layer coating die head in the prior art, which is composed of an upper die 1 ', a middle die 2 ', a lower die 3 ', an upper layer gasket and a lower layer gasket, wherein the upper layer die cavity is arranged on the upper die 1 ', and the lower layer die cavity is arranged on the lower die 3 '. When the die head is in a coating state, the lower die 3 'is in a horizontal state, and the upper die 1' is in an inclined state, so that when the coating die head is installed, the emptying port of the upper die cannot be accurately corresponding to the highest position of the upper die cavity easily, the emptying efficiency is low, and the intermittent coating process is difficult to use.

Disclosure of Invention

The invention aims to provide a double-layer coating die head and a coating machine, which are beneficial to emptying of the coating die head by rearranging the positions of an upper layer die cavity, a lower layer die cavity and an emptying port.

In order to achieve the above purpose, the technical scheme adopted by the invention is to provide a double-layer coating die head, which comprises a lower die, a middle die and an upper die which are sequentially arranged from bottom to top, wherein a first fluid distribution cavity is arranged on the lower die, a second fluid distribution cavity is arranged on the middle die, the first fluid distribution cavity is obliquely arranged, the second fluid distribution cavity is horizontally arranged, a first emptying port communicated with the first fluid distribution cavity is arranged on the middle die, and a second emptying port communicated with the second fluid distribution cavity is arranged on the upper die.

Further, the lower mould with press from both sides between the well and be equipped with first gasket, press from both sides between well mould and the last mould and be equipped with the second gasket, be equipped with on the lower mould be used for to the first feedstock channel of first fluid distribution chamber feed, be provided with on the well mould be used for to the second feedstock channel of second fluid distribution chamber feed, be formed with the first coating opening that is used for the ejection of compact on the first gasket, first coating opening with first fluid distribution chamber intercommunication, be formed with the second coating opening that is used for the ejection of compact on the second gasket, second coating opening with second fluid distribution chamber intercommunication.

Further, the first coating opening is obliquely arranged, and the second coating opening is horizontally arranged.

Furthermore, a glue dispensing flow channel is arranged on the first gasket, and a connecting channel communicated with the glue dispensing flow channel is arranged on the upper die and the middle die.

Further, an opening and closing valve is arranged on the upper die head, and the opening and closing valve is arranged on the connecting channel.

Further, a support member is disposed on one side of the first gasket, and the support member is located in the first fluid distribution chamber.

Furthermore, a push-pull rod adjusting mechanism for adjusting the surface density of the lower coating is arranged on the lower die.

Furthermore, a differential head adjusting mechanism for adjusting the surface density of the upper coating is arranged on the upper die.

Further, the invention also provides a coating machine, which comprises the double-layer coating die head.

The invention has the beneficial effects that:

1. when the structure is used for installing a coating die head, the second fluid distribution cavity is horizontally arranged, and the second emptying port is still positioned at the highest point of the second fluid distribution cavity, so that the first fluid distribution cavity and the second fluid distribution cavity can be emptied conveniently, and the intermittent coating is better realized.

2. When coating, the backing rod drives the base material to be coated to rotate from bottom to top, so that when the base material passes through the first coating opening, the first coating in the first fluid distribution cavity is extruded from the first coating opening and coated on the surface of the base material to form a first coating, when the base material coated with the first coating on the surface passes through the second coating opening, the second coating in the second fluid distribution cavity is extruded from the second coating opening and coated on the surface of the first coating to form a second coating, so that the base material can finish double-layer coating when passing through the coating die head, the coating efficiency and the production efficiency of a product are improved, the time consumption of a coating machine with the coating die head is short when the double-layer coating is carried out, and the coating efficiency is improved.

3. The first gasket sets up its structural strength of some glue runner back and can weaken, warp easily under the pressure effect of thick liquids, through setting up the backing sheet, further carries out fixed stay to first gasket, prevents its deformation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a background art drawing;

FIG. 2 is a schematic perspective view of a two-layer coating die according to an embodiment of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a side view of a two-layer coating die provided by an embodiment of the present invention;

FIG. 5 is a sectional view taken along line A-A of FIG. 4;

FIG. 6 is a sectional view taken along line B-B of FIG. 4;

FIG. 7 is a sectional view taken along line C-C of FIG. 4;

fig. 8 is a cross-sectional view of a second vent used in a dual-layer coating die according to an embodiment of the present invention;

FIG. 9 is a block diagram of a second shim for use in a two-layer coating die according to an embodiment of the present invention;

fig. 10 is a schematic diagram of the position of a support used in a two-layer coating die according to an embodiment of the present invention.

Description of reference numerals:

1. a lower die; 11. a first fluid distribution chamber; 12. a first feed channel; 2. a middle mold; 21. a second fluid distribution chamber; 22. a first evacuation port; 23. a second feed channel; 3. an upper die; 31. a second evacuation port; 4. a first gasket; 41. a first coating opening; 42. a support member; 5. a second gasket; 51. a second coating opening; 6. a connecting channel; 7. an opening and closing valve; 8. a push-pull rod adjustment mechanism; 9. differential head adjustment mechanism.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 2 to 8, a double-layer coating die head provided as an embodiment of the present invention includes a lower die 1, a middle die 2, and an upper die 3 sequentially arranged from bottom to top, the lower die 1 is provided with a first fluid distribution cavity 11, the middle die 2 is provided with a second fluid distribution cavity 21, the first fluid distribution cavity 11 is obliquely arranged, the second fluid distribution cavity 21 is horizontally arranged, the middle die 2 is provided with a first vent 22 communicated with the first fluid distribution cavity 11, and the upper die 3 is provided with a second vent 31 communicated with the second fluid distribution cavity 21. When the coating die head is installed in the structure, because the second fluid distribution cavity 21 is horizontally arranged, the second evacuation port 31 is still positioned at the highest point of the second fluid distribution cavity 21, which is beneficial to the evacuation of the first fluid distribution cavity 11 and the second fluid distribution cavity 21, and the intermittent coating is better realized.

Referring to fig. 2 to 10, specifically, the first drain 22 is horizontally disposed, and the second drain 31 is vertically disposed. The arrangement ensures that the exhaust channel is straight without any bending and blocking, thereby being beneficial to the exhaust of gas. In other embodiments, the first drain 22 and the second drain 31 may be curved. A first gasket 4 is clamped between the lower die 1 and the middle die 2, a second gasket 5 is clamped between the middle die 2 and the upper die 3, a first feeding channel 12 for feeding to the first fluid distribution cavity 11 is arranged on the lower die 1, a second feeding channel 23 for feeding to the second fluid distribution cavity 21 is arranged on the middle die 2, a first coating opening 41 for discharging is formed on the first gasket 4, the first coating opening 41 is communicated with the first fluid distribution cavity 11, a second coating opening 51 for discharging is formed on the second gasket 5, and the second coating opening 51 is communicated with the second fluid distribution cavity 21. A lower die lip is formed on one side of the lower die 1 close to the first coating opening 41, an upper die lip is formed on one side of the upper die 3 close to the second coating opening 51, and the distance from the lip of the upper die 3 to the back rod is larger than the distance from the lip of the lower die 1 to the back rod; during coating, the backing rod drives the substrate to be coated to rotate from bottom to top, so that when the substrate passes through the first coating opening 41, the first coating in the first fluid distribution cavity 11 is extruded from the first coating opening 41 and coated on the surface of the substrate to form a first coating, and when the substrate coated with the first coating passes through the second coating opening 51, the second coating in the second fluid distribution cavity 21 is extruded from the second coating opening 51 and coated on the surface of the first coating to form a second coating, so that the substrate can finish double-layer coating when passing through the coating die head, the coating efficiency and the production efficiency of products are improved, the coating machine with the coating die head is short in time consumption during double-layer coating, and the coating efficiency is improved. The first coating opening 41 is obliquely arranged, and the second coating opening 51 is horizontally arranged, so that double-layer coating is facilitated.

Furthermore, a glue dispensing flow channel is arranged on the first gasket 4, and a connecting channel 6 communicated with the glue dispensing flow channel is arranged on the upper die 3 and the middle die 2.

Specifically, the upper die 3 is provided with an opening and closing valve 7, the opening and closing valve 7 is arranged on the connecting channel 6, and the opening and closing of the opening and closing valve 7 can control the starting and stopping of dispensing. One side of the first gasket 4 is provided with a support member 42, and the support member 42 is located in the first fluid distribution chamber 11. First gasket 4 sets up its structural strength of some glue runner back and can weaken, warp easily under the pressure effect of thick liquids, through setting up the backing sheet, further carries out fixed stay to first gasket 4, prevents its deformation.

Furthermore, a push-pull rod adjusting mechanism 8 for adjusting the surface density of the lower coating is arranged on the lower die 1.

Specifically, push-and-pull rod adjustment mechanism 8 includes with lower mould 1 complex adjusting screw, lower mould 1 is equipped with and runs through the logical groove of seting up in lower mould 1 bottom along the coating width direction, adjusting screw can pass and locate logical groove and adjust the width that leads to the groove, and then exert the effort to the lip of lower mould 1, with corresponding opening greatly or reduce the lip of lower mould 1 and well mould 2 between the gap, in order to realize the regulation to lower coating face density, such structure not only makes it more convenient to adjust coating face density, still be favorable to realizing accurate regulation and control.

Furthermore, a differential head adjusting mechanism 9 for adjusting the surface density of the coating is arranged on the upper die 3, and the differential head adjusting mechanism 9 can adjust the coating surface density by adjusting the slurry flow between the lip of the upper die 3 and the gap of the middle die 2 in a throttling adjusting mode.

The invention also provides a coating machine, which comprises the double-layer coating die head.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.