Standard hot melt adhesive coating die head

Abstract

The utility model provides a standard hot melt adhesive coating die head which comprises an upper die body, a lower die body and a gasket located between the upper die body and the lower die body, the upper die body, the lower die body and the gasket are connected into a whole through die locking screws, the lower die body is provided with a lower die feeding channel, and the top face of the front portion of the lower die body is provided with a first-stage buffer groove in the breadth direction. The bottom of the first-stage buffer groove communicates with the lower die feeding channel, a series of runner grooves distributed in the front-back direction are evenly distributed in the position, on the front side of the first-stage buffer groove, of the top face of the lower die body in the breadth direction, a series of vertically-formed threaded holes are formed in the upper die body in the breadth direction, and adjusting screw rods are in threaded connection with the interiors of the threaded holes; the bottom of the adjusting screw rod is inserted into the runner groove to adjust the height of the runner, a secondary buffer groove is formed in the top face of the lower die body at the front end of the runner groove in the breadth direction, the gaskets are located on the rear side, the left side and the right side of the primary buffer groove, and an extrusion channel is formed in the front area between the upper die body and the lower die body under guiding of the gaskets. The hot melt adhesive extrusion device can ensure that the extruded hot melt adhesive is uniform in thickness in different breadth directions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coating die, in particular to a standard hot melt adhesive coating die. BACKGROUND

[0002] The standard hot melt adhesive coating die is used for coating hot melt adhesive, and the application range of the hot melt adhesive is very wide, because the hot melt adhesive has the characteristics of rapid adhesion, high strength, water resistance, heat resistance and the like, and almost covers all fields requiring adhesion, such as paper gift boxes, labeling, food packaging, medical packaging and the like.

[0003] At present, the die is limited by its own structure, so that the uniformity of the coating thickness of the finally extruded product in the width direction is difficult to guarantee, and the sealing performance of the die is not good enough, and leakage and material volatilization are prone to occur, causing waste. SUMMARY

[0004] In view of the above problems, the present application aims to provide a standard hot melt adhesive coating die which can ensure the uniform thickness of the extruded hot melt adhesive in different width directions and guarantee the high precision of the extrusion quality.

[0005] The technical scheme of the present application is a standard hot melt adhesive coating die, characterized in that: it comprises an upper die body, a lower die body and a gasket located between the two, the above-mentioned three are connected into one body through die locking screws, the lower die body is provided with a lower die feeding channel, the top surface of the front part of the lower die body is provided with a first buffer groove along the width direction, the bottom of the first buffer groove is communicated with the lower die feeding channel, the top surface of the front part of the lower die body is uniformly distributed with a series of flow channel grooves arranged in the front and back directions along the width direction, the upper die body is provided with a series of vertically arranged threaded holes along the width direction, and the threaded holes are threadedly connected with adjusting screws, after each adjusting screw is rotated, the bottom thereof is inserted into a corresponding flow channel groove to adjust the height of the flow channel in the flow channel groove, the top surface of the front part of the lower die body is provided with a second buffer groove along the width direction, the gasket is located at the rear side and the left and right side regions of the first buffer groove, and the front part region between the upper die body and the lower die body forms an extrusion channel under the guidance of the gasket.

[0006] Preferably, the bottom surface of the lower die body is connected with a feeding body, at least two feeding ports are arranged on the rear side surface of the feeding body, a third buffer groove is arranged on the top surface of the front part of the feeding body along the width direction, the feeding ports are communicated with the bottom of the third buffer groove through a third feeding channel inwardly, the lower die feeding channel is distributed on the bottom surface of the lower die body, and the top of the third buffer groove is communicated with the lower die feeding channel.

[0007] Preferably, the number of the lower mold feeding channels is three, which are distributed at the left, middle and right positions of the bottom surface of the lower mold body, and the intervals between the adjacent two lower mold feeding channels, the interval between the left lower mold feeding channel and the left side surface of the lower mold body and the interval between the right lower mold feeding channel and the right side surface of the lower mold body all correspond.

[0008] Preferably, the bottom surface of the lower mold body is connected with two feeding blocks on the left and right sides, feeding ports are arranged on the feeding blocks, the number of the lower mold feeding channels is two, which are distributed at the left and right regions of the bottom surface of the lower mold body, and the two feeding ports are connected with the two lower mold feeding channels through internal flow channels.

[0009] Preferably, the mold locking screw is of a double-row structure, the rear row of mold locking screws is located at the rear part of the upper mold body and corresponds to the rear side region of the primary buffer groove of the lower mold body, and the front row of mold locking screws is located at the front part of the upper mold body and corresponds to the positions between the flow channel grooves of the lower mold body.

[0010] Preferably, a series of electric heating holes for controlling the temperature of the mold body are uniformly arranged on the lower mold body.

[0011] Preferably, an outwardly extending anti-collision baffle is connected to the lower part of the front side surface of the lower mold body.

[0012] The present application can ensure that the thickness of the extruded hot melt adhesive is uniform in different width directions, the speed vectors of the raw materials in different width directions tend to be consistent in the extrusion process, the extrusion quality is ensured to be high-precision, and the double-row mold locking screw is adopted to ensure that the sealing performance of the mold head is good. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a first structure schematic view of the present application;

[0014] Figure 2 It is an exploded view of Figure 1

[0015] Figure 3 It is an internal structure schematic view of Figure 1

[0016] Figure 4 It is a second structure schematic view of the present application;

[0017] Figure 5 It is a structure schematic view of another perspective; Figure 4

[0018] Figure 6 It is an exploded view of Figure 5

[0019] Figure 7 It is an internal structure schematic view of Figure 4

[0020] Figure 8 ​​​​​This is a schematic diagram of the third structure of the present invention;

[0021] Figure 9 for Figure 8 Exploded view;

[0022] Figure 10 for Figure 8 Internal structure diagram;

[0023] Wherein: 1—Upper mold body; 11—Threaded hole; 2—Lower mold body; 21—Lower mold feed channel; 22—Primary buffer groove; 23—Flow channel groove; 24—Secondary buffer groove; 25—Electric heating hole; 3—Shim; 4—Mold locking screw; 5—Adjusting screw; 6—Extrusion channel; 7—Feed body; 71—Feed inlet; 72—Third-stage buffer groove; 73—Third-stage feed channel; 8—Feed block; 9—Anti-collision baffle. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] like Figures 1 to 3 As shown, this invention provides a standard hot melt adhesive coating die head, characterized in that it includes an upper die body 1, a lower die body 2, and a gasket 3 located between the two, the three being connected as one unit by a locking screw 4. The lower die body 2 is provided with a lower die feeding channel 21, and a primary buffer groove 22 is provided on the front top surface of the lower die body 2 along the width direction. The bottom of the primary buffer groove 22 is connected to the lower die feeding channel 21. A series of flow channel grooves arranged in the front-back direction are evenly distributed on the top surface of the lower die body 2 on the front side of the primary buffer groove 22 along the width direction. 23. The upper mold body 1 is provided with a series of vertically arranged threaded holes 11 along the width direction. The threaded holes 11 are internally threaded with adjusting screws 5. After each adjusting screw 5 is rotated, its bottom is inserted into a corresponding flow channel groove 23 to adjust the flow channel height in that flow channel groove 23. The top surface of the lower mold body 2 at the front end of the flow channel groove 23 is provided with a secondary buffer groove 24 along the width direction. The gasket 3 is located behind and on the left and right sides of the primary buffer groove 22. The front area between the upper mold body 1 and the lower mold body 2 forms an extrusion channel 6 under the guidance of the gasket 3.

[0026] like Figures 4 to 7As shown, the present application provides a standard hot melt adhesive coating die, characterized by: including upper die body 1, lower die body 2, and gasket 3 between the two, the above three are connected into one by locking screw 4, the lower die body 2 is provided with lower die feeding channel 21, the top surface of the front part of the lower die body 2 is provided with a first buffer groove 22 along the width direction, the bottom of the first buffer groove 22 is communicated with the lower die feeding channel 21, the top surface of the lower die body 2 of the front side of the first buffer groove 22 is uniformly distributed with a series of flow channel grooves 23 arranged in front and back directions along the width direction, the upper die body 1 is provided with a series of vertical threaded holes 11 along the width direction, the threaded holes 11 are threadedly connected with adjusting screws 5, after each adjusting screw 5 is rotated, the bottom is inserted into a corresponding flow channel groove 23 to adjust the flow channel height in the flow channel groove 23, the top surface of the lower die body 2 of the front end of the flow channel groove 23 is provided with a second buffer groove 24 along the width direction, the gasket 3 is located at the rear side and the left and right side areas of the first buffer groove 22, the front area between the upper die body 1 and the lower die body 2 forms an extrusion channel 6 under the guidance of the gasket 3; the bottom surface of the lower die body 2 is connected with a feeding body 7, at least two feeding ports 71 are arranged on the rear side surface of the feeding body 7, a third buffer groove 72 is arranged on the top surface of the front part of the feeding body 7 along the width direction, the feeding ports 71 are communicated with the bottom of the third buffer groove 72 through the third feeding channel 73 inward, the lower die feeding channel 21 is distributed on the bottom surface of the lower die body 2, and the top of the third buffer groove 72 is communicated with the lower die feeding channel 21.

[0027] Among them, the number of lower die feeding channels 21 is three, which are distributed at left, middle and right positions on the bottom surface of the lower die body 2, and the spacing between adjacent two lower die feeding channels 21, the spacing between the left lower die feeding channel 21 and the left side surface of the lower die body 2, and the spacing between the right lower die feeding channel 21 and the right side surface of the lower die body 2 all correspond.

[0028] As Figures 8 to 10As shown, the present application provides a standard hot melt adhesive coating die, characterized by: including the upper die body 1, the lower die body 2, and the gasket 3 between the two, the above three are connected into one by the locking screw 4, the lower die body 2 is provided with a lower die feeding channel 21, the front top surface of the lower die body 2 is provided with a first buffer groove 22 along the width direction, the bottom of the first buffer groove 22 is communicated with the lower die feeding channel 21, the top surface of the lower die body 2 on the front side of the first buffer groove 22 is uniformly distributed with a series of flow channel grooves 23 arranged in front and back directions along the width direction, the upper die body 1 is provided with a series of vertical threaded holes 11 along the width direction, the threaded holes 11 are threadedly connected with adjusting screws 5, after each adjusting screw 5 is rotated, the bottom is inserted into a corresponding flow channel groove 23 to adjust the flow channel height in the flow channel groove 23, the top surface of the lower die body 2 at the front end of the flow channel groove 23 is provided with a second buffer groove 24 along the width direction, the gasket 3 is located at the rear side and the left and right side areas of the first buffer groove 22, and the front area between the upper die body 1 and the lower die body 2 forms an extrusion channel 6 under the guidance of the gasket 3; the bottom surface of the lower die body 2 is connected with two left and right feeding blocks 8, the feeding blocks 8 are provided with feeding ports, the number of the lower die feeding channels 21 is two, and the two feeding ports are respectively communicated with the two lower die feeding channels 21 through internal flow channels.

[0029] Specifically, the locking screw 4 is a front and back double-row structure, the rear row of locking screws 4 is located at the rear of the upper die body 1 and corresponds to the rear side area of the first buffer groove 22 of the lower die body 2, and the front row of locking screws 4 is located at the front of the upper die body 1 and corresponds to the position between the flow channel grooves 23 of the lower die body 2. The front and back double-row locking screws 4 are adopted to improve the sealing performance of the die body and reduce material volatilization.

[0030] In addition, a series of electric heating holes 25 for controlling the temperature of the die body are uniformly arranged on the lower die body 2. The temperature of the die body is stable.

[0031] Further, the lower die body 2 is connected with an outwardly extending anti-collision baffle 9 at the lower part of the front side. In the process of installing the roller in front, the anti-collision baffle 9 will first contact the roller relative to the die lip when the die body moves forward, so as to prevent the die lip from being knocked to affect the precision of the extrusion channel 6.

[0032] Three kinds of feeding structures are adopted in the present application:

[0033] The first kind is that the lower die body 2 directly feeds through the lower die feeding channel 21, the feeding port can be one or more, and the raw material is uniformly extruded from the extrusion channel 6 after passing through the first buffer groove 22, the flow channel groove 23 and the second buffer groove 24, and the adjusting screw 5 is used to adjust the height of the flow channel at the flow channel groove 23.

[0034] The second kind is to set a whole feeding body 7 at the bottom of the lower mold body 2, at least two feeding ports 71 are set at the rear side of the feeding body 7, a three-stage buffer groove 72 is set at the front top surface of the feeding body 7 along the width direction, the raw material enters through the feeding port 71 and then passes through the three-stage feeding channel 73 and the bottom of the three-stage buffer groove 72 inwards, the raw material fills the three-stage buffer groove 72 and then passes through the lower mold feeding channel 21 to enter the first-stage buffer groove 22, fills the first-stage buffer groove 22 and then passes through the flow channel groove 23 to enter the second-stage buffer groove 24, the raw material overflows and then is uniformly extruded through the extrusion channel 6, and the adjusting screw 5 is used to adjust the height of the flow channel at the flow channel groove 23.

[0035] The third kind is to set two feeding blocks 8 at the bottom of the lower mold body 2, feeding ports are set at the rear side of the feeding blocks 8, the raw material enters through the feeding ports and then passes through the internal flow channels and is communicated with the left and right two lower mold feeding channels 21 respectively, the raw material passes through the left and right two lower mold feeding channels 21 to enter the first-stage buffer groove 22 upwards, fills the first-stage buffer groove 22 and then passes through the flow channel groove 23 to enter the second-stage buffer groove 24, the raw material overflows and then is uniformly extruded through the extrusion channel 6, and the adjusting screw 5 is used to adjust the height of the flow channel at the flow channel groove 23.

[0036] The above is only the preferred embodiment of the present application, and does not limit the present application in any form, any simple modification, equivalent change or modification made according to the technical principle of the present application to the above embodiment still belongs to the scope of the technical solution of the present application.

Claims

1. A standard hot melt glue coating die characterized by: The utility model relates to a kind of extrusion die, including upper die body (1), lower die body (2) and gasket (3) between two, above-mentioned three are connected into an organic whole by locking screw (4), the lower die body (2) is provided with lower die feeding channel (21), the lower die body (2) top surface is provided with a primary buffer groove (22) along width direction in front part, the primary buffer groove (22) bottom is connected with lower die feeding channel (21), the primary buffer groove (22) top surface of lower die body (2) is evenly distributed with a series of flow channel groove (23) arranged in front and back direction in front side, the upper die body (1) is provided with a series of vertical arrangement screw holes (11) along width direction, threaded connection is carried out in screw hole (11) with adjusting screw (5), after each adjusting screw (5) rotates, bottom is inserted into corresponding flow channel groove (23) and adjusts the flow channel height in flow channel groove (23) of this place, the lower die body (2) top surface is provided with secondary buffer groove (24) along width direction in front end of flow channel groove (23), the gasket (3) is located in primary buffer groove (22) rear side and left and right two side areas, the front area between the upper die body (1) and lower die body (2) forms extrusion channel (6) under the guidance of gasket (3).

2. A standard hot melt glue coating die according to claim 1, characterized in that: The lower die body (2) bottom is connected with feeding body (7), the feeding body (7) rear side is provided with at least two feeding ports (71), the feeding body (7) top surface is provided with tertiary buffer groove (72) along width direction in front part, feeding port (71) is communicated with the bottom of tertiary buffer groove (72) by tertiary feeding channel (73) inwards, the lower die feeding channel (21) is distributed on the bottom of lower die body (2), the top of tertiary buffer groove (72) is communicated with lower die feeding channel (21).

3. A standard hot melt glue coating die according to claim 2, characterized in that: The number of lower die feeding channel (21) is three, and is distributed on the bottom of lower die body (2) left, middle and right, the interval between adjacent two lower die feeding channels (21), the interval between left lower die feeding channel (21) and the left side of lower die body (2), and the interval between right lower die feeding channel (21) and the right side of lower die body (2) all correspond.

4. A standard hot melt glue coating die according to claim 1, characterized in that: The bottom of lower die body (2) is connected with left and right two feeding blocks (8), the feeding block (8) is provided with feeding port, the number of lower die feeding channel (21) is two, and is distributed on the left and right two areas of the bottom of lower die body (2), two feeding ports are communicated with two lower die feeding channels (21) respectively by internal flow channel.

5. A standard hot melt adhesive coating die according to any one of claims 1 to 4, characterized in that: The locking screw (4) is double-row structure in front and back, rear row locking screw (4) is located in the rear of upper die body (1) and corresponds the rear side area of primary buffer groove (22) of lower die body (2), front row locking screw (4) is located in the front of upper die body (1) and corresponds the position between flow channel groove (23) of lower die body (2).

6. A standard hot melt adhesive coating die according to any one of claims 1 to 4, characterized in that: The lower die body (2) is evenly provided with a series of electric heating holes (25) for controlling die temperature.

7. A standard hot melt adhesive coating die according to any one of claims 1 to 4, characterized in that: The lower die body (2) front side lower part is connected with outwardly extending anti-collision baffle (9).

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