Gap-variable coating die head

Abstract

The utility model provides a variable gap coating die head which comprises a gluing die head, a cavity is formed in the gluing die head, a glue outlet groove communicated with the interior of the gluing die head is formed in one side of the gluing die head in the length direction of the gluing die head, and a glue inlet pipe communicated with the interior of the cavity is fixedly installed at the bottom of the gluing die head; and a plurality of partition plates extending into the glue outlet groove are fixedly mounted on the inner top wall of the glue coating die head in a linear array in the horizontal direction. According to the utility model, the change adjustment of the thickness of an adhesive layer can be realized without depending on a mold front-and-back moving mechanism, so that the adjustment difficulty is reduced; the partition plates are arranged to divide the glue outlet groove into the multiple glue outlet holes, when the materials need to be locally coated with glue layers with different thicknesses according to the requirements of the materials, the width of each glue outlet hole can be adjusted through the adjusting mechanism, the glue outlet thickness of each glue outlet hole is adjusted, and the effect that the materials are coated with the glue layers with different thicknesses according to the requirements can be achieved; the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating dies, and particularly relates to a variable-gap coating die. Background Art

[0002] Coating and compounding equipment is widely used in the sizing coating and compounding processing of substrates such as plastic films, papers, fabrics, and leathers. And no matter which coating and compounding equipment, its key component is the coating die; a cavity is constructed inside the coating die, and a glue outlet groove is opened on the coating die for discharging the hot melt adhesive entering the cavity to perform the coating work;

[0003] At present, the hot melt adhesive coating dies all have continuous flat die openings, and its advantages are convenient processing and can coat a uniform glue surface according to the process requirements; in order to facilitate the adjustment of the coating thickness of the material according to the material in the later stage, the existing hot melt adhesive coating die needs to be installed on a bracket with a front-back movement control mechanism. During use, when the glue layer thickness needs to be changed, the position of the die head is adjusted through the front-back movement control mechanism of the bracket to achieve the effect of changing the glue layer thickness. Although this method can change the glue layer thickness, in the actual use process, there are still the following defects:

[0004] When the glue layer thickness needs to be changed according to the coated material, it is necessary to adjust the position of the die head through the front-back movement control mechanism of the bracket, which is rather troublesome and inconvenient to operate; moreover, since the die opening of the hot melt adhesive coating die is a continuous flat die opening, when the product has special thickness requirements, such as when the thickness of the coated glue layer is different, it is difficult for the flat die opening to meet the processing requirements, and the practicability is relatively low;

[0005] Therefore, this application proposes a variable-gap coating die. Summary of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the utility model provides a variable-gap coating die, which solves the problems mentioned in the background art.

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0008] A variable-gap coating die includes a coating die head. A cavity is constructed inside the coating die head. A glue outlet groove communicating with its interior is opened on one side of the coating die head along its length direction. A glue inlet pipe communicating with the interior of the cavity is fixedly installed at the bottom of the coating die head;

[0009] A plurality of partition plates extending into the glue outlet groove are fixedly installed on the inner top wall of the glue coating die head in a horizontal linear array. The glue outlet groove is partitioned into a plurality of glue outlet holes with rectangular cross-sections by the partition plates. A plurality of adjusting mechanisms are installed on the inner top wall of the glue coating die head, and the plurality of adjusting mechanisms correspond to the plurality of glue outlet holes one by one. The adjusting mechanism is used to adjust the height of the glue outlet holes.

[0010] Further: The adjusting mechanism includes an adjusting shell fixedly installed on the inner top wall of the glue coating die head and located on one side of the partition plate. An adjusting block movably penetrates through one side of the adjusting shell close to the glue outlet hole. One end of the adjusting block penetrating through the adjusting shell and extending to the outside thereof is fixedly installed with a blocking plate having the same length as the glue outlet hole. An adjusting member connected to the adjusting block is installed on the glue coating die head, which is used to make the adjusting block slide or stop sliding in the adjusting shell. The bottom of the side of the blocking plate away from the adjusting block slopes downward along the direction of the adjusting block.

[0011] Further: The adjusting member includes an adjusting rod horizontally and rotatably installed on the glue coating die head. One end of the adjusting rod movably penetrates through the adjusting shell and is threadedly connected to the adjusting block.

[0012] Further: An annular installation groove is formed in the inner wall of the adjusting shell near its opening end. A sealing gasket clamped with the adjusting shell is inserted into the annular installation groove. The sealing gasket abuts against the outer wall of the adjusting block and is hidden in the annular installation groove.

[0013] Further: The number of the glue inlet pipes is multiple. The multiple glue inlet pipes are arrayed along the length direction of the glue coating die head and fixedly installed at the bottom of the glue coating die head. All the multiple glue inlet pipes are communicated with the inside of the cavity. Thread grooves are formed on the outer side wall of one end of the glue inlet pipe away from the glue coating die head.

[0014] Further: A plurality of mounting seats are fixedly installed on the bottom of the glue coating die head along its length direction. Mounting holes are formed in the mounting seats in a rectangular array.

[0015] The utility model provides a variable-gap coating die head. Compared with the prior art, the following beneficial effects are achieved:

[0016] 1. Through the design of the partition plate and the adjusting mechanism, when in use, when it is necessary to adjust the glue application thickness of this glue application die head, the height of multiple glue outlet holes is adjusted through multiple adjusting mechanisms, so as to realize the adjustment of the glue application thickness of this glue application die head. Thus, the change adjustment of the glue layer thickness can be realized without relying on the mold front and back moving mechanism, reducing the adjustment difficulty; and by setting the partition plate, the glue outlet groove is divided into multiple glue outlet holes. When in use, when it is necessary to apply glue layers with different thicknesses locally on the material according to the material requirements, the width of each glue outlet hole can be adjusted separately through the adjusting mechanism to achieve the effect of adjusting the glue application thickness of each glue outlet hole. Thus, the effect of applying glue layers with different thicknesses to the material according to the requirements can be realized, improving the practicability;

[0017] 2. Through the design of the sealing gasket, the sealing gasket abuts against the outer wall of the adjusting block, thereby increasing the fit between the adjusting shell and the adjusting block and the sealing performance between the adjusting shell and the adjusting block, effectively avoiding the situation that the hot melt glue in the cavity enters the adjusting shell through the relative side between the adjusting shell and the adjusting block;

[0018] 3. By setting the number of the glue inlet pipes to be multiple, and multiple glue inlet pipes are all communicated with the inside of the cavity. When installing this glue application die head, the external glue supply device can inject glue into the cavity of the glue application die head through multiple glue inlet pipes simultaneously, thereby increasing the glue injection speed into the glue application die head. By setting the outer side wall of the end of the glue inlet pipe far away from the glue application die head to be provided with a thread groove, it is convenient to connect the glue inlet pipe with the external glue supply device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 Shows the three-dimensional structure schematic diagram of the present invention;

[0021] Figure 2 Shows the installation structure schematic diagram of the glue inlet pipe of the present invention;

[0022] Figure 3 Shows the installation structure schematic diagram of the adjusting mechanism of the present invention;

[0023] Figure 4 Shows the Figure 3 enlarged view of part A in the present invention;

[0024] Figure 5 Shows the installation structure schematic diagram of the partition plate of the present invention;

[0025] As shown in the figure: 1. Glue coating die head; 11. Cavity; 12. Glue outlet groove; 121. Glue outlet hole; 13. Glue inlet pipe; 131. Threaded groove; 14. Partition plate; 2. Adjusting mechanism; 21. Adjusting shell; 211. Annular mounting groove; 212. Sealing gasket; 22. Adjusting block; 23. Plugging plate; 24. Adjusting part; 241. Adjusting rod; 3. Mounting seat; 31. Mounting hole. Specific embodiments

[0026] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1

[0028] To solve the technical problems in the background art, a variable-gap coating die head is provided as follows:

[0029] Combined with Figures 1 - 5 As shown, a variable-gap coating die head provided by the present utility model includes a glue coating die head 1. A cavity 11 is formed inside the glue coating die head 1. A glue outlet groove 12 communicating with its interior is provided on one side of the glue coating die head 1 along its length direction. A glue inlet pipe 13 communicating with the interior of the cavity 11 is fixedly installed at the bottom of the glue coating die head 1. During use, the material is located outside the glue outlet groove 12, and the hot melt adhesive is transported into the glue inlet pipe 13 through an external glue supply device, so that the hot melt adhesive can be transported into the cavity 11 and then flow out through the glue outlet groove 12; A plurality of partition plates 14 are fixedly installed on the inner top wall of the glue coating die head 1 in a horizontal linear array and all extend into the glue outlet groove 12. The glue outlet groove 12 is divided into a plurality of glue outlet holes 121 with rectangular cross-sections by the partition plates 14. A plurality of groups of adjusting mechanisms 2 are installed on the inner top wall of the glue coating die head 1. The plurality of groups of adjusting mechanisms 2 correspond to the plurality of glue outlet holes 121 one by one. The adjusting mechanism 2 is used to adjust the height of the glue outlet holes 121.

[0030] Through the design of the partition plate 14 and the adjusting mechanism 2, during use, when it is necessary to adjust the glue application thickness of the glue application die head 1, the height of a plurality of glue outlet holes 121 is adjusted through a plurality of adjusting mechanisms 2, so as to realize the adjustment of the glue application thickness of the glue application die head 1. Thus, the adjustment of the glue layer thickness can be realized without relying on the front and back movement mechanism of the die, reducing the adjustment difficulty. And by arranging the partition plate 14, the glue outlet groove 12 is divided into a plurality of glue outlet holes 121. During use, when it is necessary to apply glue layers with different local coating thicknesses to the material according to the material requirements, the widths of the respective glue outlet holes 121 can be adjusted separately through the adjusting mechanism 2 to achieve the effect of adjusting the glue application thickness of each glue outlet hole 121. Thus, the effect of applying glue layers with different thicknesses to the material according to the requirements can be realized, improving the practicability.

[0031] Embodiment 2

[0032] As Figures 1 - 5 shown, on the basis of the above embodiment, the following content is further given in this embodiment:

[0033] In this embodiment, the adjusting mechanism 2 includes an adjusting shell 21 fixedly installed on the inner top wall of the glue application die head 1 and located on one side of the partition plate 14. A regulating block 22 movably penetrates through one side of the regulating shell 21 close to the glue outlet hole 121. One end of the regulating block 22 penetrating through the regulating shell 21 and extending to the outside thereof is fixedly installed with a blocking plate 23 having the same length as the glue outlet hole 121. It should be noted that the width of the blocking plate 23 is greater than the width of the glue outlet hole 121. An adjusting member 24 connected to the regulating block 22 is installed on the glue application die head 1, which is used to make the regulating block 22 slide or stop sliding in the regulating shell 21. The bottom of the side of the blocking plate 23 away from the regulating block 22 slopes downward along the direction of the regulating block 22. During use, the regulating block 22 is made to slide in the regulating shell 21 towards the glue outlet hole 121 through the adjusting member 24, so as to drive the blocking plate 23 to displace towards the glue outlet hole 121. When the side of the blocking plate 23 away from the regulating block 22 extends into the glue outlet hole 121, the distance between the inclined surface at the bottom of the regulating block 22 and the inner bottom wall of the glue outlet hole 121 can be adjusted, so as to realize the effect of adjusting the height of the glue outlet hole 121 through the blocking plate 23. When the hot melt adhesive in the cavity 11 is extruded through the glue outlet hole 121, it is extruded from between the inclined surface at the bottom of the blocking plate 23 and the inner bottom wall of the glue outlet hole 121, so as to realize the effect of adjusting the thickness of the glue layer extruded through the glue outlet hole 121.

[0034] In this embodiment, the adjusting member 24 includes an adjusting rod 241 that is horizontally arranged and rotatably mounted on the glue application die head 1. One end of the adjusting rod 241 movably penetrates through the adjusting shell 21 and is threadedly connected to the adjusting block 22. Specifically, it should be noted that: the adjusting shell 21 is attached to the inner wall of the cavity 11 on the side far from the glue outlet groove 12. During use, rotating the adjusting rod 241 can make the adjusting block 22 slide and displace within the adjusting shell 21. The operation is simple. Since the threaded connection between the adjusting rod 241 and the adjusting block 22 has self-locking property, when the adjusting rod 241 is not rotated, the position of the adjusting block 22 can be fixed, which is convenient for use.

[0035] Embodiment Three

[0036] As Figures 1 - 5 shown, on the basis of the above embodiment, this embodiment further gives the following content:

[0037] In this embodiment, an annular installation groove 211 is formed in the inner wall of the adjusting shell 21 near its opening end. A sealing gasket 212 that is snap-fitted with the adjusting shell 21 is inserted into the annular installation groove 211. The sealing gasket 212 is supported by a rubber gasket. The sealing gasket 212 abuts against the outer wall of the adjusting block 22 and is hidden in the annular installation groove 211. Through the design of the sealing gasket 212, the sealing gasket 212 abuts against the outer wall of the adjusting block 22, thereby increasing the adhesion between the adjusting shell 21 and the adjusting block 22 and the sealing performance between the adjusting shell 21 and the adjusting block 22, effectively avoiding the situation that the hot melt adhesive in the cavity 11 enters the adjusting shell 21 through the relative side between the adjusting shell 21 and the adjusting block 22.

[0038] In this embodiment, the number of the glue inlet pipes 13 is multiple. The multiple glue inlet pipes 13 are arranged in an array along the length direction of the glue application die head 1 and are fixedly installed at the bottom of the glue application die head 1. Moreover, the multiple glue inlet pipes 13 are all communicated with the inside of the cavity 11. A threaded groove 131 is formed on the outer side wall of one end of the glue inlet pipe 13 far from the glue application die head 1. By setting the number of the glue inlet pipes 13 to be multiple and all the multiple glue inlet pipes 13 being communicated with the inside of the cavity 11, when installing this glue application die head 1, an external glue supply device can inject glue into the cavity 11 of the glue application die head 1 through the multiple glue inlet pipes 13 simultaneously, thereby improving the glue injection speed into the glue application die head 1. By setting the threaded groove 131 on the outer side wall of one end of the glue inlet pipe 13 far from the glue application die head 1, it is convenient to connect the glue inlet pipe 13 with an external glue supply device.

[0039] In this embodiment, a plurality of mounting seats 3 are fixedly installed at the bottom of the glue application die head 1 along its length direction. Mounting holes 31 are formed in the mounting seats 3 in a rectangular array. By providing the mounting seats 3 and the mounting holes 31, the installation and fixation of this glue application die head 1 are facilitated.

[0040] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A variable-gap coating die head, characterized in that: It includes a glue - applying die head (1). A cavity (11) is constructed inside the glue - applying die head (1). On one side of the glue - applying die head (1) and along its length direction, a glue - discharging groove (12) communicating with its interior is provided. A glue - inlet pipe (13) communicating with the interior of the cavity (11) is fixedly installed at the bottom of the glue - applying die head (1). On the inner top wall of the glue - applying die head (1), a plurality of partition plates (14) are fixedly installed in a horizontal linear array and all extend into the glue - discharging groove (12). The glue - discharging groove (12) is divided into a plurality of glue - discharging holes (121) with rectangular cross - sections by the partition plates (14). A plurality of groups of adjusting mechanisms (2) are installed on the inner top wall of the glue - applying die head (1). The plurality of groups of adjusting mechanisms (2) correspond to the plurality of glue - discharging holes (121) one by one. The adjusting mechanism (2) is used to adjust the height of the glue - discharging holes (121). The adjusting mechanism (2) includes an adjusting shell (21) fixedly installed on the inner top wall of the glue - applying die head (1) and located on one side of the partition plate (14). An adjusting block (22) movably penetrates through one side of the adjusting shell (21) close to the glue - discharging hole (121). One end of the adjusting block (22) penetrating through the adjusting shell (21) and extending to the outside is fixedly installed with a blocking plate (23) having the same length as the glue - discharging hole (121). An adjusting member (24) connected to the adjusting block (22) is installed on the glue - applying die head (1), which is used to make the adjusting block (22) slide or stop sliding in the adjusting shell (21). The bottom of the side of the blocking plate (23) away from the adjusting block (22) slopes downward along the direction of the adjusting block (22).

2. The variable-gap coating die head according to claim 1, wherein: The adjusting member (24) includes an adjusting rod (241) horizontally and rotatably installed on the glue - applying die head (1). One end of the adjusting rod (241) movably penetrates through the adjusting shell (21) and is threadedly connected to the adjusting block (22).

3. The variable-gap coating die head according to claim 2, wherein: An annular installation groove (211) is provided on the inner wall of the adjusting shell (21) near its open end. A sealing gasket (212) clamped with the adjusting shell (21) is inserted in the annular installation groove (211). The sealing gasket (212) abuts against the outer wall of the adjusting block (22) and is hidden in the annular installation groove (211).

4. The variable-gap coating die head according to claim 1, characterized in that: The number of the glue - inlet pipes (13) is multiple. The multiple glue - inlet pipes (13) are arrayed along the length direction of the glue - applying die head (1) and fixedly installed at the bottom of the glue - applying die head (1). And the multiple glue - inlet pipes (13) are all communicated with the interior of the cavity (11). A threaded groove (131) is provided on the outer side wall of the end of the glue - inlet pipe (13) away from the glue - applying die head (1).

5. The variable-gap coating die head according to claim 1, characterized in that: A plurality of mounting seats (3) are fixedly installed at the bottom of the glue - applying die head (1) along its length direction. Mounting holes (31) are provided in a rectangular array on the mounting seats (3).

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